Question

After deducting grunts based on the rape cost to attend the University of Southern California (USC) $27.175. Am the pulation standard deviations $7.400. Suppose that a random sample of 50 USC dents will be taken from the population (-) What the value of the standard error of the mean (Round your answer to the heart whole number) (b) What is the probably that the sample mean will be more than $27.175 () What is the ability that the same man within 51.000 of population (d) What is the probability that the sample mean be within $1,000 of the population mean if the sample increased to 100? (Round your answer to four deomal places)

Answer 1

PL 26175 CXC 28175) M- 21175 T- 7 yoo naso Standard Eror = 7400 = 1046.518 7 PlŤ > 27175) By Normal approximation. pl X-Mx > 27175-45 27175-109 21175 z > 1046 518 pl zoo) - 0.5 Pl M-1000 < xL M+1000) By Normal approximation-

P/ 26175-926175 1046.516 X-Me L 28175-26175 1046.518 Pla - 0.96 <?<0.96) Plz 10.96) - Plz 2.096) By 2 table 0.8315 O. 1685 0.6630 n-loo 74oo than 6. 740 PLA! 1000 < 2L 740 740 Pl-1 -1.35<2< 1.35) Plz 41.35) - Pla2-1.35) By z table -0.9115 0.0885 0.6230 Please like