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Cholesterol levels in two groups

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A research study examined the cholesterol levels in two groups, intervention versus placebo, to see whether consuming more salmon in the diet would make a difference on cholesterol levels. The mean cholesterol level of the 60 people in the placebo group was 240 with a SD of 20. The 60 people in the salmon consumption group had a mean cholesterol level of 210 with a SD of 21. Calculate the z, t, or chi-square test and choose the value in the answer below.

Select one:

a. 6.91

b. 7.23

c. 8.01

d. 5.38

Please show your work.

Reference no: EM131966910

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