4.2 The average age of a sample of 17 South African women who attend yoga...

4.2 The average age of a sample of 17 South African women who attend yoga classes was found to be 31 years, with a standard deviation of 3.5 years. Construct a 90% confidence interval for the true average age of all South African women who attend yoga classes. Interpret your answer.

Confidence Level	Z - Limits
90%	± 1.645
95%	±1.96
99%	±2.58

Expert Solution

Given data,

n = 15,

Average(x)=31

standard deviation(S)=3.5

90% confidence interval is given by =

=

= (29.461,32.538)

orchestra answered 1 year ago

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