Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Connect one-on-one with {0} who will answer your question

Question 2 out of...

Question 2 out of 9.

Assume you know the standard deviation of test scores is 10 and that the distribution is normal. You sample 16 scores and find that the sample mean is 25. Find the p value for a two-tailed test of the hypothesis that the population mean is 20.

The standard error of the mean is 2.5. You then find the probability of a sample mean more than 25-20 = 5 from the population mean of 20. This is the probability outside 15 and 25 given a distribution with a mean of 20 and a standard deviation of 2.5. The probability is .0455.

**Tutor's Assistant:** The Tutor can help you get an A on your homework or ace your next test. Is there anything else important you think the Tutor should know?

Here is what I have calculated. t = M – mean/(Sm) = 25-20/ [10/ square root (16) ] = 5 / (10 ÷4 ) = 5 / 2.5 = 2. , df would be 16-1 = 15. I dont get the p value of 0.0455

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Calculus and Above Questions

This is my Mid-term, and I have to get it finished by

Hello, This is my Mid-term, and I have to get it finished by 2am, are you available? if so, I have copied and pasted it below :). 1. A ________ displays the minimum, first quartile, median, third quar… read more

Need help with statistics multiple choice questions ASAP. An

Need help with statistics multiple choice questions ASAP. An investigator claims, with 95 percent confidence, that the interval between 10 and 16 miles includes the mean commute distance for all Calif… read more

There are 1500 juniors in a college. Among the 1500 juniors,

There are 1500 juniors in a college. Among the 1500 juniors, 200 students are taking STAT200, and 100 students are taking PSYC300. There are 50 juniors taking both courses. 12. What is the probability… read more

Refer to the following information for Questions 21, 22, and

Refer to the following information for Questions 21, 22, and 23. The heights of pecan trees are normally distributed with a mean of 10 feet and a standard deviation of 2 feet. 21. What is the probabil… read more

The monthly incomes for 12 randomly selected people

13.) The monthly incomes for 12 randomly selected people, each with bachelor's degree in economics, are shown on the right: 4450.77 4596.43 4366.21 4455.62 4151.34 3727.06 4283.99 4527.57 4407.44 3946… read more

Create an example probability distribution to the right in

Create an example probability distribution to the right in which the expected value is 15. You must have at least three different values for x. What are the values for the mean and standard deviation … read more

A sample of 120 U.S. households has a mean computer usage time

A sample of 120 U.S. households has a mean computer usage time of 19.2 hours per week with a sample standard deviation of 3.3 hours. Find a 99% confidence interval for the mean computer usage time of … read more

Where applicable, round your answers to three decimal places

Where applicable, round your answers to three decimal places, e.g. 0.123. 1. Refer to Example 3.3. From the histogram of the marks, estimate the following probabilities. a. P(55 < X 65) c. P(X <… read more

A formal statement that there is an absence of relationship

A formal statement that there is an absence of relationship between variables when tested by a researcher is called:… read more

FOR GURU ONLY --- FOR GURU ONLY!!! Here are the first 40.

FOR GURU ONLY --- FOR GURU ONLY!!! Here are the first 40. As per your last e-mail of only getting half of what you charge, I'll pay $50 for this first 40 and $50 for the second 40 questions. If all is… read more

Use the following sample data to answer questions 1 through 4:

Use the following sample data to answer questions 1 through 4: -1, 0, 2, 3, 7, 10, 10 _____1. The mean, X , of the data above is (to the nearest 1/10) a. 8.3 b. 9.0 c. 9.4 d. 4.4 _____2. The median of… read more

1) The main purpose of descriptive statistics is to A.

1) The main purpose of descriptive statistics is to A. summarize data in a useful and informative manner B. make inferences about a population C. determine if the data adequately represents the popula… read more

1) Which of the following measures of central location is affected

1) Which of the following measures of central location is affected most by extreme values? A. Mean B. Median C. Mode D. Geometric mean 2) Which level of measurement is required for the median? A. Nomi… read more

Homework Questions Pt. 1!!Short answer questions:1. Identify

FOR MATH-JOHN OR ANYONE WILLING TO HELP!! Short answer questions: 1. Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement. A poll of registered vote… read more

It is important to assess the magnitude or strength of a relationship

6. It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. (Points : 1) True False 7. In a negative … read more

Subject: Quantitative approach to business decision-I need

Subject: Quantitative approach to business decision-I need assistances with 25 questions (multiple choice or true/false). 2.5 hours to complete.… read more

My scenario: A researcher is interested in the height, weight,

My scenario: A researcher is interested in the height, weight, and TV-watching habits of 10 year old children. Suppose that the weights of all 10 year olds in the United States are normally distribute… read more

Consider a binomial random variable where the number of trials

Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. (Points : 5) Me… read more

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.

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.

...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.

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

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!!!!

Los 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.

Hesperia, CA

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

Kernersville, 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.

Woodstock, 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.

Elkton, 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.

Dallas, TX

< Previous | Next >

SusanAthena

Master's Degree

102 satisfied customers

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

Mr. Gregory White

Master's Degree

99 satisfied customers

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

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-

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

Master's Degree

33 satisfied customers

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

Don

Master's Degree

29 satisfied customers

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

mhasan420

Master's Degree

15 satisfied customers

BA Maths, Oxford

< Previous | Next >

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.