(Answered) 1 you are given cholesterol levels of 13 men and 12 women

Statistics

1. You are given cholesterol levels of 13 men and 12 women as below. Use Wilcoxan Rank-Sum Test.

a. Sort 25 numbers and rank them from smallest to largest, and fill up the ranks in the table.

Male	Rank	Female	Rank
522		264
127		181
740		267
49		384
230		98
316		62
590		126
466		89
121		531
578		130
78		175
265		44
250
n1= R1=		n2= R2=

b. Find µ_R and σ_R.

c. Calculate test statistic z.

d. Test the claim that the two populations of men and women have different median cholesterol levels. Can you support the claim? Hint: find H_o and H₁, two tailed test? Critical values from Table A-2. Use traditional method with a =0.05.

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