Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN: 9781305627734
Author: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher: Cengage Learning
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Chapter 6, Problem 42P
a.
To determine
Find the null and alternative hypothesis for proportion 0.50.
b.
To determine
Find the point estimate and p-value.
c.
To determine
State conclusions based on proportion for 1% level of significance.
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One of the reasons health care costs have been rising rapidly in recent years is the increasing cost of malpractice insurance for physicians. Also, fear of being sued causes doctors to run more precautionary tests (possibly unnecessary) just to make sure they are not guilty of missing something. These precautionary tests also add to health care costs. Data in the Excel file provided below are consistent with findings in the Reader's Digest article and can be used to estimate the proportion of physicians over the age of 55 who have been sued at least once.
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The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 42 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds.
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Chapter 6 Solutions
Essentials of Business Analytics (MindTap Course List)
Ch. 6 - The American League consists of 15 baseball teams....Ch. 6 - The U.S. Golf Association is considering a ban on...Ch. 6 - A simple random sample of 5 months of sales data...Ch. 6 - Morningstar publishes ratings data on 1,208...Ch. 6 - One of the questions in the Pew Internet &...Ch. 6 - In this chapter we showed how a simple random...Ch. 6 - The College Board reported the following mean...Ch. 6 - Prob. 8PCh. 6 - The Economic Policy Institute periodically issues...Ch. 6 - The state of California has a mean annual rainfall...
Ch. 6 - The president of Doerman Distributors, Inc.,...Ch. 6 - Prob. 12PCh. 6 - People end up tossing 12% of what they buy at the...Ch. 6 - Prob. 14PCh. 6 - The International Air Transport Association...Ch. 6 - Prob. 16PCh. 6 - Health insurers are beginning to offer...Ch. 6 - The average annual premium for automobile...Ch. 6 - Prob. 19PCh. 6 - According to Thomson Financial, last year the...Ch. 6 - The Pew Research Center Internet Project conducted...Ch. 6 - For many years businesses have struggled with the...Ch. 6 - The manager of the Danvers-Hilton Resort Hotel...Ch. 6 - The manager of an automobile dealership is...Ch. 6 - A production line operation is designed to fill...Ch. 6 - Because of high production-changeover time and...Ch. 6 - Duke Energy reported that the cost of electricity...Ch. 6 - Prob. 28PCh. 6 - Carpetland salespersons average 8,000 per week in...Ch. 6 - Suppose a new production method will be...Ch. 6 - Prob. 31PCh. 6 - A shareholders’ group, in lodging a protest,...Ch. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - According to the National Automobile Dealers...Ch. 6 - What percentage of the population live in their...Ch. 6 - Prob. 38PCh. 6 - Ten years ago 53% of American families owned...Ch. 6 - Prob. 40PCh. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - The Port Authority sells a wide variety of cables...Ch. 6 - The Port Authority also wants to determine if the...Ch. 6 - Prob. 1C
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- Find the mean hourly cost when the cell phone described above is used for 240 minutes.arrow_forwardThe blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. A sample of 42 blue catfish caught at this reservoir provided a mean of 40.57 with a standard deviation of 3.35. Using a 0.05 significance level, test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds.a) Identify the null and alternative hypotheses? H0H0: ? p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥ H1H1: ? p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥ b) What type of hypothesis test should you conduct (left-, right-,…arrow_forwardThe blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 43 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds. n = 43; x = 40.49 pounds; s = 2.89 pounds a) Identify the null and alternative hypotheses? Ho: ? H₁: ? b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed right-tailed two-tailed c) Identify the appropriate…arrow_forward
- The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 45 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds. n=45 ; ¯x=40.73 pounds; s=4.6 pounds a) Identify the null and alternative hypotheses? H0: H1: b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed c) Identify the appropriate significance…arrow_forwardThe blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 42 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds. n = 42; a = 40.51 pounds; s = 2.99 pounds a) Identify the null and alternative hypotheses? Но: ? На: ? b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed right-tailed two-tailed c) Identify the appropriate…arrow_forwardThe blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 48 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds.arrow_forward
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- The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 44 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the Jlohn H. Kerr Reservoir is greater than 40 pounds, n = 44; = 40.76 pounds; s = 5.12 pounds a) Identify the null and alternative hypotheses? Ho: H.:? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed Oright-tailed O two-tailed c) Identify the appropriate…arrow_forwardThe blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. a) If you're going to test this claim at the 0.05 significance level, what would be your null and alternative hypotheses? H:___ H:___ b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?arrow_forwardThe blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to A Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than Use the data below, which represents the summary statistics for 43 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pour 43: 2 40.69 pounds; s 4.28 pounds a) Identify the null and alternative hypotheses? Ho: ? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed Oright-tailed Otwo-tailed c) Identify the appropriate significance level.arrow_forward
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