Math Homework

Ask Math Questions. Get Help With Your Math Homework

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

Customer Question

•1. A researcher is interested...

•1. A researcher is interested in testing the common belief that most college students gain 15 pounds their freshman year of college. He collects the weight of a group of freshman in September and then again in April. Data is from p 800 in the text (You can save some time by getting the data from the CD that came with your book).

•a. What is the mean median and mode of the weight obtained in September?

•b. What is the standard deviation and variance for weight obtained in September and for weight obtained in April?

•c. Compare these groups.

•i. Did college students gain 15 pounds their freshman year of college?

•ii. Explain the reasoning behind your answer.

•d. Graph the distribution (Hint: using the DDXL add-in will make this very easy.)

•e. Describe the distribution in terms of symmetry and skew

Here's the data:

sex weight in sept weight in april

m 97 59

m 94 86

m 93 69

m 92 88

f 87 64

m 81 55

f 80 60

f 77 53

f 75 68

f 74 56

f 74 47

m 74 69

m 74 66

f 73 55

f 71 68

f 71 60

f 70 52

m 70 92

f 70 58

m 69 67

f 68 58

f 68 50

m 68 68

f 68 69

m 67 88

m 67 82

m 66 61

f 65 53

m 65 71

f 64 64

f 64 57

m 64 69

m 64 69

f 64 56

m 64 82

m 63 66

f 63 59

f 63 65

f 62 56

f 61 58

m 60 56

m 60 75

m 59 79

f 59 66

f 58 54

f 58 62

f 57 68

f 57 56

f 57 65

f 56 58

m 56 77

m 56 78

m 56 68

m 55 68

f 55 61

f 54 68

f 54 64

m 54 68

m 53 71

f 53 57

m 52 77

f 52 60

m 51 71

m 50 82

f 49 49

m 42 82

m 34 105

•a. What is the mean median and mode of the weight obtained in September?

•b. What is the standard deviation and variance for weight obtained in September and for weight obtained in April?

•c. Compare these groups.

•i. Did college students gain 15 pounds their freshman year of college?

•ii. Explain the reasoning behind your answer.

•d. Graph the distribution (Hint: using the DDXL add-in will make this very easy.)

•e. Describe the distribution in terms of symmetry and skew

Here's the data:

sex weight in sept weight in april

m 97 59

m 94 86

m 93 69

m 92 88

f 87 64

m 81 55

f 80 60

f 77 53

f 75 68

f 74 56

f 74 47

m 74 69

m 74 66

f 73 55

f 71 68

f 71 60

f 70 52

m 70 92

f 70 58

m 69 67

f 68 58

f 68 50

m 68 68

f 68 69

m 67 88

m 67 82

m 66 61

f 65 53

m 65 71

f 64 64

f 64 57

m 64 69

m 64 69

f 64 56

m 64 82

m 63 66

f 63 59

f 63 65

f 62 56

f 61 58

m 60 56

m 60 75

m 59 79

f 59 66

f 58 54

f 58 62

f 57 68

f 57 56

f 57 65

f 56 58

m 56 77

m 56 78

m 56 68

m 55 68

f 55 61

f 54 68

f 54 64

m 54 68

m 53 71

f 53 57

m 52 77

f 52 60

m 51 71

m 50 82

f 49 49

m 42 82

m 34 105

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a math tutor or teacherLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Math Homework Questions

Use the HWAS data for problem 4. Assume HWAS data is a Popul

Use the HWAS data for problem 4. Assume HWAS data is a Population, and use the Age column of the data set. Take a Simple Random Sample from the Age column of n=30. a. For this SRS of 30, find the Mean… read more

a. Using Ideal Weight data, make a histogram, get Mean, Std.Deviation,

a. Using Ideal Weight data, make a histogram, get Mean, Std.Deviation, and Five-Number Summary. Describe the distribution. Description should include min, max, center, spread, number of peaks, shape, … read more

Using the Age column, take a Simple Random Sample (SRS) of

Using the Age column, take a Simple Random Sample (SRS) of n=30. Show the sample and explain how you took the sample. Use StatCrunch sampling, Excel Analysis Toolpak sampling, or Excel function Randbe… read more

5) Make a scatterplot of two continuous variables-Age, Sex Age 57,

5) Make a scatterplot of two continuous variables-Age, Sex Age 57, 67, 59, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 61, 65, 65, 66, 67, 68, 69, 67, 67, 72, 73, 74, 75, 74, 70, 68, 68, 69, 6… read more

The hospital would like to ensure that the overall arrival

The hospital would like to ensure that the overall arrival to provider wait time is less than 60 minutes. Column B has overall wait times for a random sample of 150 patients. a) Using α = .05, conduct… read more

21. Solve the problem. Round results to the nearest hundredth.

21. Solve the problem. Round results to the nearest hundredth. The mean of a set of data is -3.82 and its standard deviation is 2.31. Find the z score for a value of 3.99. (Points: 5) 3.04 3.72 3.68 3… read more

susan athena. Given the following frequency distribution, find

susan athena. Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequency 56-58 25 59-61 21 62-64 8 65-67 13 68-70 21… read more

Here are heart rates for a sample of 30 students before and

Here are heart rates for a sample of 30 students before and after a class break. At a = .05, was there a significant difference in the mean heart rate? (a) State the hypotheses. (b) State the decision… read more

Construct a grouped frequency distribution for the following

Construct a grouped frequency distribution for the following 28 scores using a class width of 4: 66 56 55 55 52 61 63 69 57 70 62 54 68 52 68 67 68 69 53 62 71 69 71 69 75 74 64 68… read more

A study argues that peoples abilities may deteriorate with

A study argues that people's abilities may deteriorate with age, the study reports that 25 year olds did better than 60 year olds on a IQ test. The data in the tables are raw test scores for a sample … read more

How do I calculate a test statistic for the wilcoxon signed

How do I calculate a test statistic for the wilcoxon signed rank test. my research question is the average income among men and women greater than 30000 H0: mu 30000 here is the data below. Wilcoxon S… read more

1. How much time do executives spend each day reading and sending

1. How much time do executives spend each day reading and sending email? A survey was conducted to obtain this information. The response (in minutes) is below. Can we infer from these data that the me… read more

15.9) Ages of 56 attendees of a Harry Potter movie are shown.

15.9) Ages of 56 attendees of a Harry Potter movie are shown. (a) Form seven age classes (10 to 20, 20 to 30, etc.). Tabulate the frequency of attendees in each class. (b) Calculate expected frequenci… read more

Here are the heart rates for a sample of 30 students before

Here are the heart rates for a sample of 30 students before and after a class break. At a=0.5, was there a significant difference in the mean heart rate? (a) State the hypothesis. (b) State the decisi… read more

Some traffic experts believe that the major cause of highway

Some traffic experts believe that the major cause of highway collisions is the differing speeds of cars. That is, when some cars are driven slowly while others are driven at speeds well in excess of t… read more

Income 53 47 59 44 87 56 62 60 70 85 63 57 59 64 45 62 63 55 77 52 72

Income 53 47 59 44 87 56 62 60 70 85 63 57 59 64 45 62 63 55 77 52 72 64 68 54 63 57 67 47 58 58 58 57 66 67 63 62 49 42 70 42 69 28 53 59 44 61 54 67 5 5 56 74 33 67 55 50 52 47 48 59 60 50 46 70 56 … read more

Suppose a group of 50 students have the following heights (in

Suppose a group of 50 students have the following heights (in inches): 60, 61, 70, 74, 60, 72, 64, 67, 70, 68, 71, 68, 73, 59, 54, 55, 61, 65, 71, 70, 66, 59, 64, 59, 65, 61, 66, 65, 70, 72, 73, 65, 6… read more

A court administrator wants to examine burglary case disposition

A court administrator wants to examine burglary case disposition times in his city. A random sample of 50 burglary cases disposed of during the previous year is drawn. The numbers that follow represen… 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 >

Manal Elkhoshkhany

Bachelor's Degree

153 satisfied customers

I have completed my BA degree in 1988, and graduated with a GPA of 4.0.

Thilaan

Master's Degree

126 satisfied customers

I have done Masters.

Mr. Gregory White

Master's Degree

113 satisfied customers

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

rajeevanpillai

Master's Degree

872 satisfied customers

M.Sc Statistics MPhil Statistics

Dr Arthur Rubin

Doctoral Degree

76 satisfied customers

Ph.D. in Mathematics, California Institute of Technology

JACUSTOMER-yrynbdjl-

Master's Degree

49 satisfied customers

I have taught college Mathematics for the past 10 years.

SusanAthena

Master's Degree

41 satisfied customers

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

< 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.