Mathematics, 05.05.2020 06:28, amandaaaa13

E. Using the test-statistic value , solve the problem below. Use the five steps method in writing the answer completely. For numbers 41 to 45: The cashier of a fast- food restaurant claims that the average amount spent by the customers for dinner is ₱120.00. A sample of 50 customers over a month period was randomly selected and it was found out that the average amount spent for dinner was ₱122.50. Using a 0.05 level of significance, can It be concluded that the average amount spent by customer is more than ₱120.00? Assume that the population standard deviation is ₱6.50. For numbers 46 to 50: It is claimed that the average weigh of babies at birth is 3.4 kg. The average weight of a random sample a of 30 newly born babies was determined. It was found out that the average weight was 3.1 kg. Is there reason to believe that the average weigh of babies is not 3.4 kg? Assume that the population standard deviation is 1.1 kg . Use 0.05 level of significance.

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E. Using the test-statistic value , solve the problem below. Use the five steps method in writing th...