The results of a mock board exam for assessing the mathematics skills of realtors werenormally distributed with a mean score of 72 and a standard deviation of 12. The realtorswho scored in the top 10% are to receive a special certificate, while those in the bottom20% will be required to attend a remedial workshop. What score will dictate that therealtor attend the workshop?Select one:O A. 60О В. 72О С. 62O D. 48

A normal distribution follows a bell shaped curve which is centred at the mean and it is also called…

Answered: The results of a mock board exam for…

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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You are a teacher at a gifted school, and you feel that the newest class of students is even brighter than usual. The mean IQ at your school is 127, and the mean IQ of this new class is 134. In total, there are 32 students in this new class. Also, the standard deviation of the school’s IQ is 8. Use the eight steps to test whether this new class of students is significantly more intelligent than the school’s student body overall.
FOLLOW THE INSTRUCTIONS AND ANSWER COMPLETELY AND TYPEWRITTEN FOR UPVOTE. NOT FOLLOWING MY INSTRUCTIONS GETS DOWNVOTE
The mean of 15 items was found to be 45. On rechecking, it was found that two items were wrongly taken as 12 and 18 instead of 32 and 28 respectively. Find the correct mean. a. 47 b. None of these answers. С. 675 d. 705
According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?
A researcher speculates that because of differences in diet, Japanese children have a lower mean blood cholesterol level than U.S. children do. Suppose that the mean level for U.S. children is known to be 175. Let ? represent the true mean blood cholesterol level for Japanese children. What hypotheses should the researcher test? H0: ? = 175 versus Ha: ? > 165H0: ? = 175 versus Ha: ? < 185 H0: ? = 175 versus Ha: ? < 175H0: ? = 175 versus Ha: ? > 175H0: ? = 185 versus Ha: ? > 175
AN ENGINEERING STUDENT`SPENDS BETWEEN 5 MINUTES TO 15 MINUTES EATING HIS LUNCH. FOR THE SITUATION, DETERMINE THE STANDARD DEVIATION ans .2887
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.
The mean IQ of 200,000 current and past University of Manitoba students has been found to be 81.9. The standard deviation was found to be 13.1. The student enrollment at the University of Manitoba in 2016 was 29,987. The minimum IQ to be able to graduate from the University of Winnipeg has been found to be 104. Of the 29,987 students at the University of Manitoba in 2016, how many would be expected to be smart enough to graduate from the University of Winnipeg? Assume a Gaussian distribution.
The mean of a set of data is 238.39 and its standard deviation is 77.24. Find the z-score for a value of 419.9. Round to two decimal places. О А. 2.12 В. 2.35 С. 2.65 O D. 2.59
If an urn has 10 white balls and nine red balls what is the probability that five randomly selected balls contain at least 4 white balls
what is the interquartile range of the data?
Suppose the midterm exam score for 100 students at UPC had a mean of 70 and a standard deviation of 5. How many students scored between 55 and 85 marks 65 and 75 marks

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