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answer all the questions in the file. There are two questions using the table provided fpr each question.Problem 1: (50 points)
The Dublin retailer age study provided the following data on the ages of customers from independent
random samples taken at the two store locations
Inner city store
n1 = 36
Sample mean = 40 years
Population standard deviation = 9 years
Out of town store
n2 = 49
Sample mean = 35 years
Population standard deviation = 10 years
Perform hypothesis testing to investigate the difference between the population mean ages at the town
stores (using α = 0.05) , what is your conclusion ? (Show all of your work)
Problem 2: (50 points)
SAT test is a commonly used test for university entrance. Scores for independent samples of students is
shown below . The first sample shows scores for students whose parents are college graduates . The
second sample shows scores for students whose parents are high school graduates
485
534
650
554
550
572
497
592
487
533
526
410
515
578
448
469
Students parents
442
580
479
486
528
524
492
478
425
485
390
535
Perform hypothesis testing to determine whether the sample data support the hypothesis that students
show a higher population mean SAT scores if their parents were college graduates (using α = 0.10)

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