Question

CON and Achiedia provided television channel tarted to individuating in supermarket checkout. The channel showed that future, wd verses. The hof the program based on the antion that the Deputation mean time she per stands in a supermarket checklines 7.9 inches Angle of actual wing time will be used to test the wind termine whether heal meaning the differs from stardar Formulate the poses for the application HI 19 h. A sample of 110 shoppers showed a sample mean waiting time of 8.1 minutes sumen standard deviation of what the pale? wale (te 2 decimale) (te & decimale) t. A 0.01 what is your conclusion? De reject the Canno conclude that the population meaning timers from 7.3 d. Computea 90% confidence interval for the population mean. Does it support your conclusion to 2 decimal) in the interval

Answer 1

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a) Hypotheses for the application : Hoi l = 7.9 Hai all €7.9 b) Test statistic : -llo Z: = 8.1-7.9 where, x=8.), lo=7.9 6=3.5, n=110 3.515110 z=T0.60 p-value = P[ Z70.60] = 10.5485) c) P-value= 0.5685 > 0.01 : Do not reject the null hypotheses can not conclude that the population mean waiting time differs from 7.9 minutes. d) 99. t.c.. for population meant- (18-24/2 2 / Ft Zalo where Zx/2 = 2000/= 2.58 1(8.1- (2.58) 3.5 8.1 +12.58) 3 10 ) JITO 1(8.1-0.86098 ,8.1+0.86098) 8.96 ) ( 7.29