15. Professor Sigma randomly selects a sample of five test scores from her history class. They are:65 82734788a) Find the mean.b) Find the standard deviation. Remember that it's a sample. Round to the nearest whole number.c) The student who got the 47 is named Bob. Compute poor Bob's z-score.d) Since this is just a sample, there are other students in the class not represented here. For example,Bob's friend Amy earned a z-score of +1.75. Interpret this number: did she do better than average,roughly average, or worse than average on the test?e) Determine Amy's test score by using z = 1.75, µ = answer to part (a), and o = answer to part (b).

As per our guidelines we are suppose to answer only three subparts Given data is65,82,73,47,88sample…

Answered: 15. Professor Sigma randomly selects a…

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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Which of the following is not an aspect involved in computing the sum of products ( SP) of deviations? a. dividing by the total number of participants b. subtracting the total sum of squares collapsed across all scores c. adding the total X and Y scores across all participants d. multiplying the X and Y scores together for each participant
The owner of a company has recently decided to raise the salary of one employee, who was already making the highest salary, by 20%. Which of the followingis is expected to be affected by this raise ? a. mean only b. median only c. mean and median only d. mean, median and mode
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After every score in a sample is multiplied by 4, the mean is calculated and found to be M=24. What is the mean for the original scores? a. 24 b. 6 c. cannot be determined d. 144
Five pulse rates are randomly selected from a set of measurements. The five pulse rates have a mean of 68.6 beats per minute. Four of the pulse rates are 74, 70, 51, and 93. a. Find the missing value. b. Suppose that you need to create a list of n values that have a specific known mean. Some of the n values can be freely selected. How many of the n values can be freely assigned before the remaining values are determined? (The result i referred to as the number of degrees of freedom.) a. The missing value is beats per minute. (Type an integer or a decimal. Do not round.) b. Select the correct choice below and fill in the answer box to complete your choice. (Type an expression using n as the variable.) OA. Of the n values, OB. Of the n values, O C. Of the n values, (...) can be freely selected because the remaining value(s) can be expressed in terms of the assigned values and the known mean. can be freely selected because the remaining value(s) can be expressed in terms of the mean,…
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Number of ninth graders (Frequency) Mean Test Score High School Glenwood 82 262 Central 92 311 Lincoln 67 168 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 82, 92, and 67, whic incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place 80.3. Of course, that is Mean of all ninth grader's scores *
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Suppose there are 5 students in a room. The mean age is 19.8 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? O The mean and median increase. The mean increases, and the median either increases or stays the same. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same. The mean increases, and the median stays the same. The median increases, and the mean either increases or stays the same.
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uction. Solve the following problem. A math class of 20 students had their had their chapter test. The following are the scores of 20 the students: 16, 27, 25, 46, 22, 43, 39, 43, 43, 49, 34, 22, 35, 27, 25, 22, 30, 29, 26, 37. Compute for its mean, median, and mode.

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