5. What is the median score of set A ={10, 23, 11, 12, 1о, 15, 15, 18, 19, 20, 22)?ОА.7.5О в. 12О с. 15O D. 18

The random variable X follows normal distribution. We have to find the median for the data.

Answered: 5. What is the median score of set A =…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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2. A statistic test has a mean of 78 and a standard deviation of 6. a) What is the z-score of a student who scored 89 on the test? b) What is the z-score of a student who scored 64 on the test? c) What is the z-score of a student who scored 78 on the test? d) What is the score of a student whose z-score is 1.24? e) What is the score of a student whose z-score is -.31? f) What is the score of a student whose z-score is -1? 3. For males in a certain towWn, the systolic blood pressure is normally distributed with a mean of 135 and a standard deviation of 8. a) What is the probability that a randomly selected male's systolic blood pressure will be greater than 143? b) What is the probability that a randomly selected male's systolic blood pressure will be less than 119?
Suppose that you have a set of data that has a mean of 34 and a standard deviation of 6. a) Is the point 28 above, below, or the same as the mean. How many standard deviations is 28 from the mean. b) Is the point 46 above, below, or the same as the mean. How many standard deviations is 46 from the mean. c) Is the point 43 above, below, or the same as the mean. How many standard deviations is 43 from the mean. d) Is the point 20 above, below, or the same as the mean. How many standard deviations is 20 from the mean.
11) Suppose we have a distribution of the number of "friends" all users of a popular social media site have. What measure of spread would be best to describe this data? A) spread should be described with the IQR because the distribution will be symmetric. B) The spread should be described with the IQR because the distribution will be skewed to the right. C) The spread should be described with the standard deviation because the distribution will be symmetric. D) The spread should be described with the standard deviation because the distribution will be skewed to the right.
6) A professor timed all students in his Statistics class for how long it took them to complete the final exam. The results are given below, in minutes. 92 170 65 70 84 145 150 145 115 170 160 150 90 110 115 100 135 105 100 155 95 88 125 120 165 75 96 a) Find the population mean and standard deviation. Use appropriate symbols b) Sketch a boxplot by hand for time to finish the exam. Write the "5 number summary" on the boxplot. c) Calculate the IQR, the interquartile range. Use the IQR to determine which, if any, data values can be classified as outliers. Show your reasoning. d) Find the value of P90, and explain its meaning in the context of the question. Show your work.
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5. What is the median score of set A = {10, 23, 11, 12, 10, 15, 15, 18, 19, 20, 22)? ОА. 7.5 О в. 12 С. 15 O D. 18