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1. Construct a confidence interval for p1-p2 at the given level of confidence. Group 1 X1=...

1. Construct a confidence interval for p1-p2 at the given level of confidence.

Group 1 X1= 110 N1 = 250

Group 2 X2=134 N2 = 298

    

Alpha = 95%
Confidence Interval p1-p2 = (_____, _____)

2.A sample size n = 50 is drawn from a normal population whose standard deviation = 3.8. The sample mean = 20.41.

Construct a 95% confidence interval for mean

Math   Statistics-And-Probability   
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