The National Bank. like most other large banks, found that using automatic teller machines (ATMs) reduces the cost of routine bank transactions. National installed an ATM in the corporate ofces of the Fun Toy Company. The ATM is for the exclusive use of Fun's 572 employees. After several months of operation, a sample of 100 employees revealed the following use ofthe ATM machine by Fun employees in a month: Number of Times ATM Used Frequency 15 26 16 15 15 25 U'I-PWNi-IG a. What is the estimate of the proportion of employees who do not use the ATM in a month? Proportion % b-1. For estimate of the proportion of employees who do not use the ATM in a month, develop a 80% confidence interval. (Round the final answers to 3 decimal places.) 80% confidence interval is and b-2. Can National be sure that at least 40% ofthe employees of Fun Toy Company will use the ATM? (Click to select) v c. How many transactions does the average Fun employee make per month? (Round the final answer to 2 decimal places.) Total transactions d. Develop a 80% confidence interval for the mean number of transactions per mo 1th. (Round the final answers to 3 decimal places.) 80% confidence interval for the mean number of transaction per month is and e. Is it possible that the population mean is O? (Click to selec v For each of the following, state the null hypothesis and the alternative hypothesis: 3. Means sales of Celebrity Living over the years have been 1.62 million per week. A manager claims that sales have decreased. H0: )1 greater-than or equal to v 1.62 H1: [J (Click to select) v 1.62 b. The manager of Little Cakes Inc. states that an average of1,520 muffins is sold each week in the retail store. One of the bakers feels that the average is greater than 1,520 and decides to test this claim. H0: )1 (Clickto select) v 1,520.00 H1: |..l (Click to select) v 1,520.00 c. For the past three years, an insurance company has stated that its average claim amount is $2,260. The manager feels that this amount should be updated and takes a sample of85 claims to see if there is a difference in the average claim amount. H0: )1 (Click to select) v 2.260 H1: |..l (Click to select) v 2,260 d. A machine on a production line is set to automatically fill each bottle with 400 mL of water. The quality control manager regularly takes random samples of the bot es from the production line to ensure that the machine is filling the bottles correctly. If not, the machine will need adjusting. H0: )1 (Click to select) v 400 H1: )1 (Clickto select) v 400 A sample of 73 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 6. Conduct the following test of hypothesis using the 0.05 significance level. HO : p S 25 H1zp>25 a. Is this a one or two-tailed test? (Click to select) v b. What is the decision rule? (Round the final answer to 3 decimal places.) (Click to select) v Ho and (Click to select) v H1 when z> :L c. What is the value of the test statistic? (Round the final answer to 2 decimal places.) Value of the test statistic d. What is your decision regarding H0? (Click to select) v H0. There is (Click to selec v evidence to conclude that the population mean is greater than 25. e. What is the pvalue? (Round the final answer to 4 decimal places.) The management of White Industries is considering a new method of assembling its golf cart. The present method requires 46.3 minutes, on the average, to assemble a cart. The mean assembly time for a random sample of 67 carts, using the new method, was 44.6 minutes, and the standard deviation of the sample was 4.3 minutes. Using the 0.10 level of significance, can we conclude that the assembly time using the new method is faster? 3. What is the decision rule? (Negative answer should be indicated by a minus sign. Round the final answer to 3 decimal places.) Reject Ho: (1 2 46.3 and accept H1: (1 (Click to select) v Ho. There is (Click to select) v evidence to conclude that the additive increased the mean weight of puppies. b. Determine or estimate the pvalue. (Round the final answer to 4 decimal places.)