7.What value of z would you use to caleulate the 98% confidence interval for a population mean, given that you know the population standard deviation, the sample size and the sample mean of your sample'? a) z-1.96 b) z- 2.58 c) z-1.28 d) z 2.33

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7.What value of z would you use to caleulate the 98% confidence interval for a
population mean, given that you know the population standard deviation, the sample size
and the sample mean of your sample'?
a) z-1.96
b) z- 2.58
c) z-1.28
d) z 2.33
Transcribed Image Text:7.What value of z would you use to caleulate the 98% confidence interval for a population mean, given that you know the population standard deviation, the sample size and the sample mean of your sample'? a) z-1.96 b) z- 2.58 c) z-1.28 d) z 2.33
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