Based on past data, the sample mean of the credit card purchasesat a large department store is $45. Assuming sample size is 25 andthe sample standard deviation is 9.
a)         What % ofsamples are likely to have between 25 and 35?                                                                ___________
b)        Between what twovalues 95% of sample meansfall?                                                                       ___________
c)         Belowwhat value 98% of sample meansfall?                                                                                  ___________
d)        Above whatvalue only5% of sample meansfall??                                                                            ___________
Within what symmetrical limits of the population percentage will95% of the sample percentages fall?
