Please help me answer these questions, no need for explanations. :)

1) In a math class of 60 students, the mean general average of the students at the end of the semester is 57 with a standard deviation of 4. Assuming that the scores are normally distributed, how many would pass if the passing score is 50?

A. 60

B. 57

C. 30

D. 47

3) Given the sample data: 23, 26, 39, 26, 35, 56, 35, 40. Compute for the standard deviation.

A. 98.50

B. 9.92

C. 112.57

D. 10.61

4) The mean of a set of 10 numbers is 50. When a number x is added to the set, the mean is changed to 52. Find the value of x.

A. 20

B. 52

C. 72

D. 60

5) The height of the students at a particular university is normally distributed with a mean of 63 inches and a standard deviation of 3 inches. There are 5000 students at this university. How many students have a height between 60 to 66 inches?

A. 3314

B. 3143

C. 3431

D. 3413

6) Since the median is the middle value of the data set, then the median is an actual value from the data set.

• True
• False

7) Calculate the mean number of hours per week spent by 42 students studying online during the pandemic.

A. 20.93

B. 22

C. 17

D. 22.93

8) Data set A has a larger standard deviation compared to data set B. Which of the following statements is correct?

A. Data in B is less dispersed compared to data in A.

B. Data in A is less dispersed compared to data in B.

C. Values in data A is larger to values in data B.

D. Values in data B is smaller to values in data A.

9) Jersey numbers can be classified as what scale of measurement?

A. Nominal

B. Ordinal

C. Interval

D. Ratio

10) Suppose that the mean score of 28 students (in a class of 30 students) in a quiz is 28. What should be the mean of the remaining 2 students in the class in order that the class mean is 30?

A. 30

B. 58

C. 2

D. 32

11) If every data point in the original data set is decreased by 2, what will happen to the mean?

A. The new mean is twice the original mean.

B. The new mean is 2 more than the original mean.

C. The new mean is 2 less than the original mean.

D. The new mean is the same as the original mean.