Explanation Given information: In a poll 110 out of 341 gamers said that they prefer playing games on a console rather than a computer or hand-held device. An executive at a game console manufacturing company claims that more than 25 % of garners prefer consoles. Calculation: It is claimed that more than 25 % of garners prefer consoles. So null and alternate hypotheses would be given as- Null hypothesis: H 0 : p = 0.25 That is, there is no evidence that more than 25 % of gamers prefer consoles. Alternative hypothesis: H 1 : p > 0.25 That is, there is evidence that more than 25 % of gamers prefer consoles. Rejection rule: If P − value < α then reject the null hypothesis. Use MINIATB to obtain the test statistic and p -value. MINITAB procedure: Step 1 : Choose Stat > Basic Statistics > 1 Proportion. Step 2 : Choose Summarized data. Step 3 : In Number of events, enter 110 . In Number of trials, enter 341 . Step 4 : Check Perform hypothesis test In Hypothesized proportion, enter 0.25 . Step 5 : Choose Options. Step 6 : In Confidence level, enter 99 . Step 7 : In Alternative, select Greater than. Step 8 : Click OK. MINITAB output: Test and Cl for One Proportion Test of p = 0.25 vs p > 0

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Chapter 9.4, Problem 18E

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Whether the survey provide convincing evidence that more that 25% gamers prefer consoles.

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Chapter 9.4, Problem 17E

Chapter 9.4, Problem 19E

Chapter 9 Solutions

Elementary Statistics (Text Only)

Ch. 9.1 - In Exercises 17â€“20, determine whether the...Ch. 9.1 - In Exercises 17-20, determine whether the outcome...Ch. 9.1 - In Exercises 17â€“20, determine whether the...Ch. 9.1 - In Exercises 17â€“20, determine whether the...Ch. 9.1 - Fertilizer: A new type of fertilizer is being...Ch. 9.1 - Big fish: A sample of loo flounder of a certain...Ch. 9.1 - Check, please: A restaurant owner claims that the...Ch. 9.1 - Coffee: The mean caffeine content per cup of...Ch. 9.1 - Big dogs: A veterinarian claims that the mean...Ch. 9.1 - Business trips A sales manager believes that the...Ch. 9.1 - Type I error: A company that manufactures steel...Ch. 9.1 - Type I error: Washers used in a certain...Ch. 9.1 - Scales: It is desired to check the calibration of...Ch. 9.1 - IQ: Scores on a certain IQ test are known to have...Ch. 9.2 - In Exercises 23â€“28, fill in each blank with the...Ch. 9.2 - In Exercises 23-28, fill in each blank with the...Ch. 9.2 - Prob. 25E Ch. 9.2 - In Exercises 23-28, fill in each blank with the...Ch. 9.2 - Prob. 27E Ch. 9.2 - Prob. 28E Ch. 9.2 - In Exercises 29-34, determine whether the...Ch. 9.2 - In Exercises 29-34, determine whether the...Ch. 9.2 - Prob. 31E Ch. 9.2 - Prob. 32E Ch. 9.2 - Prob. 33E Ch. 9.2 - Prob. 34E Ch. 9.2 - A test is made of H0:=50 versus H1:50. A sample of...Ch. 9.2 - A test is made of H0:=14 versus H1:14. A sample of...Ch. 9.2 - A test is made of H0:=130 versus H1:130. A sample...Ch. 9.2 - A test is made of H0:=5 versus H1:5. A sample of...Ch. 9.2 - A test of the hypothesis H0:=65 versus H1:65 was...Ch. 9.2 - A test of the hypothesis H0:=150 versus H1:150 was...Ch. 9.2 - True or false: If P=0.02, then The result is...Ch. 9.2 - True or false: If P=0.08, then The result is...Ch. 9.2 - A test of H0:=17 versus H1:17 is performed using a...Ch. 9.2 - A test of H0:=50 versus H1:50 is performed using a...Ch. 9.2 - A test of H0:=0 versus H1:0 is performed using a...Ch. 9.2 - Prob. 46E Ch. 9.2 - If H0 is rejected at the =0.05 level, which of the...Ch. 9.2 - Prob. 48E Ch. 9.2 - If P=0.03, which of the following is the best...Ch. 9.2 - Prob. 50E Ch. 9.2 - Prob. 51E Ch. 9.2 - Are you smarter than a second grader? 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Whether the survey provide convincing evidence that more that 25 % gamers prefer consoles.

Solution Summary: The author concludes that there is evidence that more than 25% of gamers prefer consoles.

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