Which of the following would be an appropriate null hypothesis? Select one: O The sample proportion is no less than 0.65. O The population proportion is no less than 0.65. O The population proportion is less than 0.65. O The sample proportion is less than 0.65.Which of the following statements is NOT true about the level of significance in a hypothesis test? Select one: O The level of significance is the maximum risk we are willing to accept in making a Type I error. O The symbol for the level of significance of a statistical test is a. O The significance level is another name for Type II error. O The larger the level of significance, the more likely you are to reject the null hypothesis.An entrepreneur is considering the purchase of a coin- operated laundry. The current owner claims that over the past five years, the average daily revenue was $775 with a standard deviation of $75. A sample of 60 days reveals a daily average revenue of $795. Suppose you wanted to test the hypothesis that the daily average revenue was greater than $775. Which test will you use? Select one: O Z test of a population proportion. O t test of a population mean. O t test of a population proportion. O Z test of a population mean.A manager of the credit department for an oil company would like to determine whether the mean monthly balance of credit card holders is equal to $102. An auditor selects a random sample of 32 accounts and finds that the mean owed is $111.5 with a sample standard deviation of $23.15. Suppose you wanted to conduct a test to determine whether the auditor should conclude that there is evidence that the mean balance is different from $102. The appropriate hypotheses to test are Select one: O Ho: H 102 and H1: H = 102 O Ho: H = 102 and H1: 4 102A manager of the credit department for an oil company would like to determine whether the mean monthly balance of credit card holders is equal to $102. An auditor selects a random sample of 32 accounts and finds that the mean owed is $111.5 with a sample standard deviation of $23.15. Suppose you wanted to conduct a test to determine whether the auditor should conclude that there is evidence that the mean balance is different from $102. Using the sample information provided, the correct workings to calculate the value of the test statistic are Select one: O teale = (111.5 - 102)/(23.15/32) teale = (102 - 111.5)/(23.15/V32) Scale = (111.5 - 102)/(23.15/V32) O Zcale = (102 - 111.5)/(23.15/32) Scale = (111.5 -102)/(23.15/32) O tcale = (111.5 - 102)/(23.15/V32)In a sample of n=14 selected from a normal population, r = 43.1 and s=10. You are testing the hypotheses, Ho: 1245 and H1: Zcrit Or Zcalc terit . O Reject Ho if Zcalc >Zcrit . O Reject Ho if teale terit or tcalc2.327. O Reject Ho if Zcalc > 1.282. O Reject Ho if Zcalc> 1.645 or Zcalc 1.645 or tcalc