Discussion:
Q1) A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25. The upper limit of a 95% confidence interval for the population mean would equal?
Q2. Based on sample data the 90% confidence interval limits forth population mean are 170.86 and 195.42. If the 10% level of significance was used in testing the hypthesis H1o:u=201, H1" u = 201 the null hypothesis:
would be rejected
would not be rejected
would have to be revealed
none of the above