- 2 The Past Records Of A Supermarket Show That Its Customers Spend An Average Of 595 Per Visit At This Store Recently T 1 (50.69 KiB) Viewed 26 times
store. Recently the management of the store Initiated a promotional campaign according to which each
customer recelves polnts based on the total money spent at the store, and these polnts can be used to
buy products at the store. The management expects that as a result of this campalgn, the customers
should be encouraged to spend more money at the store. To check whether this is true, the manager of
the store took a sample of 14 customers who visited the store. The following data give the money (in
dollars) spent by these customers at this supermarket during their visIts.
109.15
136.01
107.02
116.15
101 53
109 29
110.70
94.83
100.91
97.94
104.30
83 51
67 59
17014
Assume that the money spent by all customers at this supermarket has a normal distribution. Using the
5% significance level, can you conclude that the mean amount of money spent by all customers at this
supermarket after the campalgn was started is more than 595? Provide a full hypothesis test write-up.
2. The past records of a supermarket show that its customers spend an average of 595 per visit at this store. Recently the management of the store Initiated a promotional campaign according to which each customer receives points based on the total money spent at the store, and these points can be used to buy products at the store. The management expects that as a result of this campaign the customers should be encouraged to spend more money at the store. To check whether this is true, the manager of the store took a sample of 14 customers who visited the store. The following data give the money (In dollars) spent by these customers at this supermarket during their visits. 109.25 135.02 107.02 116.15 101.53 109.29 110.79 94.83 100.91 97.94 104.30 33.54 67.59 220.44 Assume that the money spent by all customers at this supermarket has a normal distribution. Using the 5% significance level, can you conclude that the mean amount of money spent by all customers at this supermarket after the campaign was started is more than $95? Provide a full hypothesis test write-up.