Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

In a survey of 80 gh school football players who committed…

Customer Question
In a survey of 80...
In a survey of 80 high school football players who committed to play in the Division III CCIW conference, 64 said that they would work out in their high school weight rooms in the summer before college. The margin of error for the survey was 6%. A census of all CCIW football players (not just freshmen) showed that 59% worked out at their high schools. One can conclude that:
A. the subjects were less than forthcoming in their responses to the survey.
B. the sample was not representative of the population.
C. there must have been an error in the determination of the margin of error.
D. the census results are consistent with the confidence interval of the study.
A botany student counted 11 blades of grass in one square centimeter of
lawn and measured the lawn as a rectangle 61 m by 31 m. She reported
that there were 208,010,000 blades of grass in the lawn. The precision
of her conclusion:
A. correctly represents her measurements.
B. is less than her measurements warrant.
C. could be greater if she used a more precise calculator.
D. is excessive given her measurements.
The size of an e-mail file is stated as 210 kB, but the file size is actually 220.5 kB. What is the absolute error?
A. 5%
B. 10%
C. 10.5 kB
D. -10.5 kB
Temperatures in degrees Fahrenheit of the ocean at various depths:
A. Ratio
B. Interval
C. Ordinal
D. Nominal
Convert 5.65 to a percent.
A. 565%
B. 5.65%
C. 0.565%
D. 56.5%
A homeowner put a brand-name fertilizer/weed killer on half of his lawn and a generic fertilizer/weed killer on the other half. After three weeks, the generic side had 1 weed per square meter, the other side 1.7 weeds per square meter. The generic side required two mowings in the 3 weeks, the brand-name side one. The homeowner concluded that the generic was superior to the brand-name. Determine which evaluation guideline applies best in questioning the results of the described study.
A. Consider possible confounding variables.
B. Consider the sample.
C. Consider the type of study.
D. Consider the source.
Soft drink sizes: small, medium, large:
A. Qualitative, nominal
B. Quantitative, ordinal
C. Quantitative, ordinal, discrete
D. Qualitative, ordinal
Which is the best fertilizer for Mr. Jimenez’ backyard grass? Select the type of study most appropriate to the question.
A. Experimental
B. Experimental blinded
C. Case-controlled observational
D. Observational
A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its use and a planned diet for six weeks. The other half of the group is given the same diet without the herb. A nurse at the nutrition center weighs each subject on Friday of each week. Select the potential source of confounding.
A. The placebo effect
B. Method of assignment to treatment and control groups
C. Experimenter effect
D. The study is essentially free of confounding sources
Humanities majors spend an average of $115 per course on books.
Mathematics majors spend an average of $70 per course on books. What is
the percent difference between the two amounts relative to the amount
for mathematics majors (round to the nearest percent)?
A. 64%
B. 39%
C. 50%
D. 42%
A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its use and a planned diet for six weeks. The other half of the group is given parsley with the same instructions and same diet. A nurse at the nutrition center weighs each subject on Friday of each week. Select the potential source of confounding.
A. Placebo effect
B. Experimenter effect
C. Method of assignment to treatment and control groups
D. The study is essentially free of potential confounding.
Compared with a stopwatch that gives readings as --. - seconds, a stopwatch that gives readings as --. - - seconds is:
A. more accurate, but not necessarily more precise.
B. more precise and more accurate.
C. not necessarily more precise or more accurate.
D. more precise, but not necessarily more accurate.
Suppose that the cost of a statistics text was $50 in 1985 and is $100 in 2000. What is the ‘Statistics Text Index’ number, rounded to the nearest tenth, for the 2000 edition with the 1985 price as the reference value?
A. 20.0
B. 200.0
C. 50.0
D. 2.0
One month before a recall election, a poll of 500 Wisconsin voters showed that 46% planned to vote for the Democratic challenger Tom Barrett and 45% planned to vote for Republican Governor ***** *****. Undecided voters constituted another 9%. The margin of error was 5 percentage points. What conclusion can you draw from this poll?
A. Barrett will win the election.
B. Walker can’t get over 50% of the votes.
C. The race is too close to call.
D. No one will win.
Which data provide the answer to the question: “How frequently can a student at Eureka College be expected to study more than three hours a day?”
A. Of 100 students surveyed, 43 reported that they study at least three hours a day twice a week.
B. Of 100 students surveyed, 43 reported that they have studied at least three hours a day.
C. Of 100 students surveyed, 43 reported that they studied at least three hours a day twice last week.
D. Of 100 students surveyed, 43 reported that they intend to study at least three hours a day next week.
Compared with a metric scale that has grams as the smallest division, a scale with milligrams as the smallest division:
A. will guarantee measurements that are more accurate, but not necessarily more precise.
B. will guarantee measurements that are more precise and more accurate.
C. will guarantee measurements that are more precise, but not necessarily more accurate.
D. will not guarantee measurements that are more accurate or more precise.
A college student who does laundry infrequently wants to determine the effect of bluing on what should be white clothes. Select the sample most representative of the population.
A. Reports of two friends, one of whom was given bluing
B. The reports of an internet chatroom on laundry techniques
C. Two loads of personal wash, one with, one without bluing
D.
Two loads of wash, one personal, one of a friend, the bluing assigned by
a coin flip
A sample consists of every 49th student from a group of 496 students. Identify the type of sampling used.
A. Systematic
B. Cluster
C. Convenience
D. Random
A poll of 700 persons attending the Taste of Chicago showed that 455 persons, 65% of the sample, believed that the food was overpriced. It is estimated that 1,250,000 persons attend the Taste. Statistics suggest that, although 65% plus or minus 5% of attendees believe that the food is overpriced, the Taste is a popular event. The raw data of the study is (are)
A. 65% of the sample.
B. 700 persons, 455 persons.
C. 1,250,000 persons, 700 persons, 455 persons.
D. (60%, 70%).
Submitted: 2 years ago.Category: Calculus and Above
Show More
Show Less
Ask Your Own Calculus and Above Question
Customer reply replied 2 years ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 19 minutes by:
3/5/2016
Tutor: Ryan, Engineer replied 2 years ago
Ryan
Ryan, Engineer
Category: Calculus and Above
Satisfied Customers: 9,181
Experience: B.S. in Civil Engineering
Verified

Hi,

Thank you for using the site. I'll be happy to help you with these problems. I'll have the solutions posted for you as soon as I can.

Thanks,

Ryan

Ask Your Own Calculus and Above Question
Was this answer helpful?
Ask SusanAthena Your Own Question
SusanAthena
SusanAthena
SusanAthena, Master's Degree
Category: Calculus and Above
Satisfied Customers: 102
102 Satisfied Customers
Experience: Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

SusanAthena is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

SusanAthena

SusanAthena

Master's Degree

102 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Mr. Gregory White

Mr. Gregory White

Master's Degree

99 satisfied customers

M.A., M.S. Education / Educational Administration

Dr Arthur Rubin

Dr Arthur Rubin

Doctoral Degree

58 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

dhouse1940

dhouse1940

Master's Degree

33 satisfied customers

BS mathematics, MS biostatistics, 35+ yrs designing & analyzing biological experiments.

Don

Don

Master's Degree

29 satisfied customers

M.S. Astronautical Engineering. Math/Sci/Comp Tutor

mhasan420

mhasan420

Master's Degree

15 satisfied customers

BA Maths, Oxford

< Previous | Next >

Related Calculus and Above Questions
You are given a motor operated by a 9V battery. The stall
you are given a motor operated by a 9V battery. The stall torque for this motor is Ts = 0.04 N-m, and its no-load speed, wnl = 2200 rpm. Draw the torque vs. speed curve for this motor. Label the axes … read more
Sandhya_sharma
Sandhya_sharma
Master\u0027s Degree
559 satisfied customers
The odds of winning a game are given as 1:25. What is the
The odds of winning a game are given as 1:25. What is the probability that you will win this game? What is the probability that you will lose this game? In your follow-up replies, consider which numbe… read more
Brad Summers
Brad Summers
Bachelor of Education
9 satisfied customers
How many business students must be randomly selected to
how many business students must be randomly selected to estimate the mean monthly earnings of business students at one college? we want 95% confidence that the sample mean is within $120 of the popula… read more
Brad Summers
Brad Summers
Bachelor of Education
9 satisfied customers
I am currently taking statistics and have no idea what I am
I am currently taking statistics and have no idea what I am reading... HELP … read more
Brad Summers
Brad Summers
Bachelor of Education
9 satisfied customers
This subject is statistical method in psychology. I need a
This subject is statistical method in psychology. I need a tutor to solve the eight questions I sent. I hope that a tutor who knows psychology statistics can solve these problems. Please read the ques… read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
I have a problem where the signal target is +/- 2.5. I have
i have a problem where the signal target is +/- 2.5. I have a constant forecast for 6 months and differences like -40, +80 etc for six months. How do I determine if these differences are compliant wit… read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
What is the sample standard deviation for strength in
What is the sample standard deviation for strength in concrete (psi) 3920​, 4060​, 3300​, 3200​, 2930​, 3820​, 4060​, 4040. The range is 1130 psi. Please help with s=___(psi)… read more
Brad Summers
Brad Summers
Bachelor of Education
9 satisfied customers
In the International Journal of Retail and Distribution
In the International Journal of Retail and Distribution Management (Vol. 39, 2011) survey of Black Friday shoppers, one question asked was, “How many hours do you usually spend shopping on Black Frida… read more
Brad Summers
Brad Summers
Bachelor of Education
9 satisfied customers
Ms. Wilson, I've never used this site before, but I see
Hi Ms. Wilson, I've never used this site before, but I see others have posted very similar assignments for assistance. I'm in the middle of a Stat200 exam right now. I'm learning as I go (course is a … read more
Brad Summers
Brad Summers
Bachelor of Education
9 satisfied customers
A population has a mean of 220 and a standard deviation of
A population has a mean of 220 and a standard deviation of 80. Suppose a sample of size 100 is selected and x ̅ is used to estimate μ.What is the expected value of x ̅ ?What is the standard deviation … read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
a parabola y=ax2+bx+c with axis of symmetry x=c intersects
a parabola y=ax2+bx+c with axis of symmetry x=c intersects a straight line y=ax+b at two points, the vertex of the parabola V(c,d) and anothe point W Find a set of numbers a,b,c (not 0) that satisfy t… read more
vibhuti9
vibhuti9
1,242 satisfied customers
Did I do this problem correct? And will an expert be
Did I do this problem correct? And will an expert be available tomorrow to help me at 10:00? Thank you!… read more
Ashok Kumar
Ashok Kumar
Master\u0027s Degree
291 satisfied customers
In the week before and the week after a​ holiday, there were
In the week before and the week after a​ holiday, there were 10 comma 000 total​ deaths, and 4979 of them occurred in the week before the holiday. a. Construct a 95​% confidence interval estimate of t… read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
Based on the data from six students, the regression equation
Based on the data from six students, the regression equation relating number of hours of preparation (x) and test score (y) is y-hat = 67.3 + 1.07x. The same data yield r = 0.224 and y-bar = 75.2. Wha… read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
Find the following probabilities. (Round all answers to four
Find the following probabilities. (Round all answers to four decimal places.) p( z < -1.94 )… read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
Find the following probabilities. (Round all answers to four
Find the following probabilities. (Round all answers to four decimal places.) p( 1.10 < z < 1.95 )… read more
Ryan
Ryan
Engineer
9,181 satisfied customers
The study you are reading reports an odds ratio of 2.5 with
The study you are reading reports an odds ratio of 2.5 with 95% confidence limits of (0.05-3.05). This means: … read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
Assume that women's heights are normally distributed with a
Assume that women's heights are normally distributed with a mean given by mu equals 64.2 inμ=64.2 in, and a standard deviation given by sigma equals 2.6 inσ=2.6 in.(a) If 1 woman is randomly selected,… read more
GLENN
GLENN
Master of Mathematics
411 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x