1.It is claimed that is not 1800. A sample of size 50 yields a sample mean of 1895 and a sample standard deviation of 250.Test the appropriate hypothesis at = 0.05.

a)Ho: at most 1800 test statistic 2.6870 greater than upper crit value 1.6766, pvalue 0.0049 Conclusion:>1800

b)Ho: at least 1800 test statistic 2.6870 not less than lower crit value -1.6766 pvalue 0.9951 Conclusion: at least 1800

c)The confidence limits reject Ho

2)Test the claim >75 at =0.10. A sample of size 76 yields a sample mean of 99 and a sample deviation of 3.5

a)The test statistic 59.779 falls outside the crit value +/- 1.665, pvalue 0.000, reject Ho not equal to 75

b)The test statistic 59.779 >lower crit value -1.293, pvalue 1.000, do no reject Ho, conclude at least 75

c)The test statistic 59.779>upper crit value 1.293, pvalue 0.000, reject Ho, conclude >75