2) The information systems (IS) department of your firm has developed a new database program to store critical information on point of sale purchases. The purchases are made during a busy time of day when the computer is performing many tasks so the amount of computer time used for each transaction is very critical. The old database program would take an average of 55 milliseconds to retrieve one piece of data. The IS department hopes the new program will reduce this time to retrieve data. The new program was tested during a typical day. The number of data retrievals was 25 and the average time to retrieve a piece of data was 50 milliseconds with a sample standard deviation of 10 milliseconds.

a)State the null and alternative hypothesis.

b) Calculate the test statistic.

c) Using the P-value approach in your decision making, at the 0.05 level of significance, is there evidence that the new computer program hasreduced the timeto retrieve the data?Report p-valueand use it to support your conclusion