Question

Question 2 10 points are Alarm s har d theme of m oud to produce an electrical part and determined that the times follow a normal distribution with mean 45 hours. The production manager has developed a new procedure for producing the part He believes that these procedure will decrease the population mean amount of time required to produce the part After training a group of production line workers a random sample of 25 parts will be selected and the average amount of tumo red to produce them will be determined. If the witch is made to the new procedure, the cost to implement the new procedure will be more than offset by the wins in manpower required to produce the parts. Use the hypotheses H 4 5 hours and H 4 5 hours Determine the p-value of the test statistic of the sample mean amount of time is 43.118 bouts with the sample standard deviation = 5 5 hours 004354 b. 0.95818 0.04999 d004973 Moving to another question w ave this response Question 2 of 10

Answer 1

Given, Sample size=n=25 sample mean = x = 43.118 hours sample standard debiation as = 5.5 hours The null and altemative hypothesis in Hoi M7ius hours Hai MC45 hours one-tailed test degrees of freedom n-1=25-1=24 Test statisticht-x-l - 43.118-45. 5.5 √25 3 P-value = tdist (1711, 24, 1) P-value = 0.04999