1. 98%,n = 54 2. 99.5%,n=31 Solution since sample size is greater than 30, we ca

ID: 2919297 • Letter: 1

Question

1. 98%,n = 54

2. 99.5%,n=31

since sample size is greater than 30, we can use z table.

i.e, at =0.02, Z (/2) = 2.33 (from z table)

2. At 99.5% confidence, n=31

since sample size is greater than 30, we can use z table.

i.e, at =0.005, Z (/2) = 2.81 (from z table) &

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