For question 16-18, consider the following distribution of test scores in a *science class.16. What is the mean score of learnersin the science test?CumulativeFrequencyFrequency27511732162204110218113Score Interval35-3930-3425-2920-2415-1910-145-9NA. 21OB. 22OC. 23OD. 273575

Answered: Image /qna-images/answer/def3ae60-69ad-4d2e-a99d-3c69df248009.jpg

Answered: For question 16-18, consider the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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C. The following table summarizes the grade point averages (GPAS) of graduate students in a statistics class. Approximate the mean GPA of the class. GPA Frequency 3.0-under 3.2 3.2-under 3.4 6. 3.4-under 3.6 6. 3.6-under 3.8 16 3.8-4.0 D. The following table lists the number of days that 15 houses in a particular area were on the market waiting to be sold. Calculate the IQR to determine whether the data set contains any outliers.
what is the percentile rank of 40? explain your answer please.
A psychologist has designed an index to measure the social perspectives of elementary school children. The index is based on ratings of a child’s responses to questions about a set of photographs showing different social situations. The following are the indices measured on a random sample of 16 children attending elementary school in a particular district. 48, 75, 69, 58, 60, 68, 59, 66, 71, 52, 49, 60, 54, 55, 70, 57 For the data the mean index is 60.69 and the standard deviation is 8.26. Perform a statistical test to determine if the population mean index is greater than 50. a) Name of hypothesis test: b) H0: c) HA: d) Test Statistic: e) Rejection region: f) Decision in the context of the problem:
The ages of the 5 officers for a school club are 18, 18, 17, 16, and 15. The median of the ages of the officers is 17.0. The table displays all possible samples of size 2 and the corresponding median for each sample. Using the medians in the table, is the sample median an unbiased estimator? Yes, 50% of the sample medians are 17 or more, and 50% are below. Yes, the mean of the sample medians is 16.8, which is the same as the mean age of the officers. No, the mean of the sample medians is 16.8, which is not the same as the median age of the officers. No, the median of the sample medians is 16.75, which is not the same as the median age of the officers.
A sample of 25 freshmen at a major university completed a survey that measured their degree of racial prejudice (the higher the score, the greater the prejudice). The same 25 students completed the same survey during their senior year. Compute measures of central tendency (mean, and median ) please explain the result? 10 45 35 27 50 35 10 50 40 30 40 10 10 37 10 40 15 30 20 43 23 25 30 40 10
A psychologist has designed an index to measure the social perspectives of elementary school children. The index is based on ratings of a child’s responses to questions about a set of photographs showing different social situations. The following are the indices measured on a random sample of 16 children attending elementary school in a particular district. 48, 75, 69, 58, 60, 68, 59, 66, 71, 52, 49, 60, 54, 55, 70, 57 For the data the mean index is 60.69 and the standard deviation is 8.26. The confidence interval is 95%, with a level of significance of 0.05. Perform a statistical test to determine if the population mean index is greater than 50. a) Name of hypothesis test: b) H0: c) HA: d) Test Statistic: e) Rejection region: f) Decision in the context of the problem:
In a sample of employees at a company here were the number of days they were out (sick/personal/vacation days) last year: 1, 6, 19, 35, 5, 9, 8, 12, 2, 15, 7, 7, 11, 15, 0, 25, 20, 15, 19, 5 Using Minitab, find the following sample statistics (take a screenshot of your output from Minitab and paste it here): Mean = median = Standard deviation =IQR=
Consider the data that was obtained from a random sample of 41 credit card accounts. Identify all the averages (mean, median, or mode) that can be used to summarize the name of credit card (e.g., MasterCard, Visa, American Express, etc.) O median if it exists mean and mode if it exists O mean, median, and mode if it exists O mode if it exists mean if it exists
The distribution of yearly income of people (thousand $) was as follows: Class <31 31-40 41-50 51-60 61-70 71-30 81-90 91-100 101-110 111-120 Frequency 7 13 5 12 23 7 10 4 14 3 Find the mean, median, and mode for the given data
Please solve the Statistics Question in 30 minutes with an explanation.
A random sample of 25 Berkeley College students was asked, “How many hours per week typically do you work outside the home?” Their responses were as follows: {0, 0, 15, 20, 30, 40, 30, 20, 35, 35, 28, 15, 20, 25, 25, 30, 5, 10, 30, 24, 28, 30, 35, 15, 15} a. Find the mean, the median and the mode of hours worked outside the home for the sample data. Show all your work to justify your answer. b. Use the above data to complete the following table summarizing the number of hours worked outside the home. Express the relative frequency as a percent. Class Tally Frequency Relative Frequency 0-10 11-20 21-30 31-40 Total c. Find the five-number summary of the hours worked outside of the home by the 25 Berkeley College students.
The following data shows the results for 20 students in one of the post graduate unit.42 66 67 71 78 62 61 76 71 6761 64 61 54 83 63 68 69 81 53Based on the information given you are required to Compute the mean, median and mode.

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