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?
-) From the values: (63, 60,74, 91, 93, 35, 72, 71, 84, 80)Find: 1- The Range 2- The number of classes 3- The length of classb-) Find out which is more dispersion variable (X) or variable (Y), if the Arithmetic Meanand the Standard Deviation of them are as follows
True or false A) A plus and minus sign before a z-score tells you if you are above or below an average score. B) A distribution has a standard deviation of o=20. A score 10 points above the mean would have a z-score =+.50 C) A distribution has s standard deviation of o=8. A score below the mean by 16 points would have a z-score =-2.00.
3. The time in minutes for Sam's phone calls this week is listed below (9, 15, 5, 7, 9, 12, 11, 4) Which statement is true about the duration of his calls? a) The median is greater than 10 b) The mean is less than 8 c) The mode is greater than 7 d) The range is less than 10
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.
A and B please
Q4) Data of 100 students' score was recorded. The arithmetic mean and standard deviation were 60 and 15 respectively. After checking, it was found that there was an error recording the scores of 2 students. The incorrect scores were 27 and 40, while the :correct scores were 72 and 45. Thus * إجابتك :Q4) a) The correct arithmetic mean is 59.25 O 60.5 61.25 O none of all above O
Q3) The following data represents the score of 40 students in one exam 26 72 41 59 60 88 35 48 11 84 36 73 50 61 95 70 46 56 28 74 14 91 27 22 39 77 44 87 60 45 90 63 43 88 71 29 86 70 69 55 * :b) The Median is 67 67.5 68 68.5 none of all above O
7) IQ examination scores of 450 members of a club are normally distributed with a mean of 160 and SD of 10. How many of the members of the club have IQ scores between 152 and 182. a)O 450 b) O 152 c) O 348 d) O 182
M means median
36 36 - 59) 17, 33, 15, 18, 22, 34, 24, 26 What is the Harmonic mean of these data? A) 21.239 B) 21,8374 C) 21,194 D) 19,817 E) 22.083
Q4

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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