Question

12;" In an experiment designed to measure the time necessary for an inspector's eyes to become used to the reduced amount of light necessary for penetrant inspection, the sample average time for n - 12 inspectors was 6.13 sec and the sample standard deviation was 1.75 sec. It has previously been assumed that the average adaptation time was at least 7 sec. Assuming adaptation time to be normally distributed, does the data contradict prior belief? Use the t test with a - .1. (Give to 2 decimal places and P- value to 3 decimal places.) p-value = Conclusion Reject the null hypothesis, there is significant evidence that u < 7 sec. Reject the null hypothesis, there is not significant efence that u < 7 sec. O Fail to reject the null hypothesis, there is significant evidence that u < 7 sec. Fail to reject the null hypothesis, there is not significant evidence that <7 sec.

Answer 1

Ho : M = 7 Ha "M 77 gine na 12, = 6.13 5=1.75 it n-M SIJA G.13 - 7 Lis72, 1.75 / J12 z - oo P value a pc t 3-1.72) 0.057 [ Fre From t table Ami 0.057 <ool 5 Ho is rejected. Any: (A) Thank you please like the answer