can someone help me please, there's an example below

Steps in Hypo'rosis Testing Identify Ho and H1 Decide on the Level of Signicance Find the critical value/s from the appropriate table. Compute the Test Statistic. Make the decision (Reject or Accept Ho) . Interpret the Results. Example 0 O O O O The leader of the association of jeepney drivers claims that the average daily take home pay of all jeepney drivers in Pasay City is P400. A random sample of 100 jeepney drivers in Pasay City was interviewed and the average daily take home pay of thee drivers is found to be P425. Use a 0.05 signicance level to nd out if the average daily take home pay of all jeepney drivers in Pasay City is different from P400. Assume that the population standard deviation is P92. Solution a. He: p = 400 H1: 0 =F 400 b. L.O.S. = 0.05 c. Critical Value = z = :I:1. 96 d. Compute for test statistic Solution: 2 = X?" = = 2.7174 f. it $400 Solve the following using hypothesis testing. 1. A manufacturer claims that the average life of batteries g In their electronic games is 150 hours. It is known that standard deviation of this type of battery is 20 hours. A consumer wishes to test the manufacturer's claim and accordineg test 100 electronic games using this battery and found out that the mean is equal to 144 hours. Use a = 5% 2. A clothing store believes that the mean income of the store's customer exceed P3D,DDD per month. 150 customers are randomly selected and asked of their annual income. The sample mean is P30,500 and its standard deviation is P4,.200. is there sufcient evidence to indicate that the mean household income of the customers of the shore exceeds P3030!) per month. Use a = 5% 3. The personnel department of a company developed an aptitude test for a certain group of semi-skilled workers. The individual test scores were assumed to be normally distributed. The department asserted a tentative hypothesis that the arithmetic mean grade obtained by this group of semi-skilled workers would be 100. It was agreed that this test hypothesis would be subjected to a two-tailed test at 5% level of signicance. The aptitude best was given to a sample of 16 semi-skilled workers and the sample mean is 94 with a standard deviation of 5. 4. A maternity hospital claims that the mean weight of babies delivered in a charity ward is 2.5 kg., with a SD. of 1.5;; but that is not what a group of obstetricians believe. So they conducted 9 babies and they found out that the average weight of it was 2.3 kg. Use a = 10%