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Q1) Create confidence interval for population mean µ

C= 0.98, Xbar=607, s=0.9, and n=51

A 98% confidence interval for µ is ?

Q2) Use confidence interval to determine the estimated margin of error, Then determine the sample mean.

A biologist reports confidence interval of (2.5,3.9) when estimating mean height(in centimetres of sample of seedlings.

Estimated margin of error is ?

Sample mean is ?

Q3) Determine the critical value z_cessential to form confidence interval at the level of confidence shown below

c-=0.96

z_c= ?

Q4) Determine the margin of error for given values of c,s,and n

C = 0.90, s= 2.8 , n=36

E= ?

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