MARYVILLE SOSC341 2022 July Assignment - Z-Scores & Percent Latest

Question # 00827557 Posted By: solutionshare7 Updated on: 07/14/2022 02:13 AM Due on: 07/14/2022
Subject Statistics Topic General Statistics Tutorials:
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SOSC341 Understanding Statistical Inference

Assignment   Z-Scores & Percent

Complete the following problems using what we have learned in class to this point. You may complete these problems on a sheet of paper and submit of picture of your work or using a tablet or computer (writing out the problems that require math). The task is not to use computer software or applications to answer the questions but to complete them by hand. You will be graded based on completing each problem (or attempting to do so) but also the accuracy of your responses. If you have questions pertaining to these questions or anything in the class, please contact me and ask.

Review the videos in your Module Resources and Tutorials 2 before completing this assignment.


The performance of 20 students on their final exam on statistics in 1992 and for the second class of 20 students in 2017 is shown in the table below.

Scores on statistics final exam, 1992 and 2017

Class of 1992      Class of 2017

80           100

91           99

91           94

80           94

74           94

74           88

73           88

75           81

76           88

73           89

73           80

69           88

67           76

68           75

68           63

68           61

68           53

57           55

58           56

59           82

 Use the data to answer the following questions.  NOTE:  You may need to use the z-score table located in Appendix A of the text (p. 697)

Find the mean and standard deviation for the final exam scores in the two years, 1992 and 2017.

Suppose you scored an 85 on this exam. In which distribution is your test score the farthest above the mean? How far above the mean is your score in both of these distributions?

Admission to a (paid) summer internship program requires that students earn a C or better (70% or higher) on their statistics final exam. If we assume that scores (in both years) on this test are reasonably normally distributed, what percentage of students in 1992 and 2017 would qualify for this internship?


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