Statistics for Business and Economics (13th Edition)
Statistics for Business and Economics (13th Edition)
13th Edition
ISBN: 9780134506593
Author: James T. McClave, P. George Benson, Terry Sincich
Publisher: PEARSON
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Chapter 7.6, Problem 7.64LM

Suppose a random sample of 100 observations from a binomial population gives a value of p ^ = .63 and you wish to test the null hypothesis that the population parameter p is equal to .70 against the alternative hypothesis that p is less than .70.

  1. a. Noting that p ^ = .63 , what does your intuition tell you? Does the value of p ^ appear to contradict the null hypothesis?
  2. b. Use the large-sample z-test to test H0: p = .70 against the alternative hypothesis, Ha: p < .70. Use α = .05. How do the test results compare with your intuitive decision from part a?
  3. c. Find and interpret the observed significance level of the test you conducted in part b.
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Chapter 7 Solutions

Statistics for Business and Economics (13th Edition)

Ch. 7.2 - Play Golf America program. The Professional Golf...Ch. 7.2 - Student loan default rate. The national student...Ch. 7.2 - A border protection avatar. The National Center...Ch. 7.2 - Calories in school lunches. A University of...Ch. 7.2 - Libor interest rate. The interest rate at which...Ch. 7.2 - Prob. 7.15ACICh. 7.2 - Authorizing computer users with palm prints....Ch. 7.2 - Jury trial outcomes. Sometimes, the outcome of a...Ch. 7.2 - Intrusion detection systems. The Journal of...Ch. 7.3 - Consider the test of H0: = 7. For each of the...Ch. 7.3 - If a hypothesis test were conducted using = .05,...Ch. 7.3 - For each and observed significance level...Ch. 7.3 - In a test of the hypothesis H0: = 50 versus H0: ...Ch. 7.3 - In a test of H0: = 100 against Ha: 100 the...Ch. 7.3 - In a test of the hypothesis H0: = 10 versus Ha: ...Ch. 7.3 - In a test of H0: = 100 against Ha: 100, the...Ch. 7.3 - In a test of H0: = 75 performed using the...Ch. 7.3 - An analyst tested the null hypothesis that 20...Ch. 7.4 - Consider the test H0: = 70 versus Ha: 70 using...Ch. 7.4 - Suppose you are interested in conducting the...Ch. 7.4 - A random sample of 100 observations from a...Ch. 7.4 - A random sample of 64 observations produced the...Ch. 7.4 - Use the applet Hypotheses Test for a Mean to...Ch. 7.4 - Use the applet Hypotheses Test for a Mean to...Ch. 7.4 - Use the applet Hypotheses Test for a Mean to...Ch. 7.4 - Corporate sustainability of CPA firms. Refer to...Ch. 7.4 - Packaging of a childrens health food. 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Ponds Age-Defying...Ch. 7.6 - Prob. 7.78ACICh. 7.6 - Prob. 7.79ACICh. 7.6 - Prob. 7.80ACACh. 7.6 - Prob. 7.81ACACh. 7.7 - Let X02 be a particular value of X2 Find the value...Ch. 7.7 - A random sample of n observations is selected from...Ch. 7.7 - A random sample of seven measurements gave x=9.4...Ch. 7.7 - Refer to Exercise 7.841. Suppose we had n = 100,...Ch. 7.7 - A random sample of n = 7 observations from a...Ch. 7.7 - Trading skills of institutional investors. Refer...Ch. 7.7 - Lobster trap placement. Refer to the Bulletin of...Ch. 7.7 - Prob. 7.89ACBCh. 7.7 - Oil content of fried sweet potato chips. Refer to...Ch. 7.7 - Strand bond performance of pre-stressed concrete....Ch. 7.7 - Drug content assessment. Refer to the Analytical...Ch. 7.7 - Jitter in a water power system. Refer to the...Ch. 7.7 - Cooling method for gas turbines. During periods of...Ch. 7.7 - Why do small firms export? The Journal of Small...Ch. 7.8 - a. List three factors that will increase the power...Ch. 7.8 - Prob. 7.97LMCh. 7.8 - Prob. 7.98LMCh. 7.8 - Prob. 7.99LMCh. 7.8 - Refer to Exercise 7.99. a. Find for each of the...Ch. 7.8 - Prob. 7.101LMCh. 7.8 - Prob. 7.102ACICh. 7.8 - Prob. 7.103ACICh. 7.8 - Prob. 7.104ACICh. 7.8 - Prob. 7.105ACICh. 7.8 - Prob. 7.106ACICh. 7.8 - Prob. 7.107ACICh. 7 - Specify the differences between a large-sample and...Ch. 7 - Complete the following statement; The smaller the...Ch. 7 - Which of the elements of a test of hypothesis can...Ch. 7 - If you select a very small value for when...Ch. 7 - If the rejection of the null hypothesis of a...Ch. 7 - A random sample of 20 observations selected from a...Ch. 7 - A random sample of 175 measurements possessed a...Ch. 7 - A random sample of n = 200 observations from a...Ch. 7 - A t-test is conducted for the null hypothesis H0 :...Ch. 7 - A random sample of 41 observations from a normal...Ch. 7 - Effectiveness of online courses. 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