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Please help me to understand the folwoing as soon as possible,

because I'll be having exam after 1 hour

and I'm revisioning the old questions the Proff gave for us

thank you

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question .jpeg

population of 5 employees.
C1: The following information gives the number of days absent from work for a
Employees
[SK3: 5 marks)
A
Number of Days Absent
B
16
C
14
D
10
8
E
2
Required:
a. Find the mean and standard deviation for the population. (2 marks)
b. Samples of size 2 will be drawn from the population. Use the answers in part (a) to
calculate the expected value and the standard deviation of the sampling distribution of the
sample mean. (1 mark)
c. Find all the samples of 2 employees that can be extracted from this population. Choose
the samples without replacement. (1 mark)
d. Compute the sample mean for each of the samples in Part (c). (1 mark)

Top Answer

a. 10, 4.90 b. 10, 3.46 c. AB, AC, AD, AE, BC, BD, BE, CD, CE, and... View the full answer

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