Question

This Question: 1 pt 8 of 30 (compete This Test: 30 pts possible o The manager of a certain type of ATM machine reports that the mean ATM withdrawals. The manager of a convenience store with this type of ATM machine claims that the mean withdrawal from his machine is more than this amount. He obtain a random sample of 30 widowals over the past year and finds the mean to be 572. Assuming the population standard deviation is $17 and using a level of picance of 1%, which of the following comed? OA p-value to decimal places) is 0213. reject the null hypothesis OB. p-value o 4 decimal places) is 00213. fail to reject the hypothesis OC p-value to 4 decimal places) lis 00007, reject the null hypothesis OD. p-value to decimal places is 0.0007, to reject the null hypothes OL. None of the above ? Cost your ans M o - Type here to search O 8 3 14 6 S 7 o им E Y R T G K L Н D А. F S

Answer 1

Solution or mean Xo $72 noo M = 165 us Hii not my $65 M is the ATM withdrawal. m=30 Observed-Tea Fis o=$12 1 et * be the sample mean. and be the observed value of sample sample mean which is p-value since it is ant, sided test 8 - 2b.M 72- | Ho] o 30 0130 PL 765 72-65 12/30 12/30 P(Z > 30 Ś Z = X-65 NAVO,) T2 12/30 드 730 CAF of 0.000649 NGO,I) Oo ooo7 Here p-value is 0.0007 less than 'cance level hence the nuu Degect hypothesis. ANO; cy 11 1 = = We 1 lo significane