b. Test the claim by constructing an appropriate confidence interval. The 98% confidence interval is <(P₁ - P₂) <- <(P1-P2) (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? Because the confidence interval limits dream in black and white is 0, it appears that the two proportions are the proportion for those under 25. Because the confidence interval limits include values, it appears that the proportion of people over 55 who c. An explanation for the results is that those over the age of 55 grew up exposed to media that was displayed in black and white. Can these results be used to verify that explanation? ○ A. Yes. The results can be used to verify the given explanation because the difference in proportions is practically significant. B. No. The results speak to a possible difference between the proportions of people over 55 and under 25 who dream in black and white, but the results cannot be used to verify the cause of such a difference. ○ C. Yes. The results can be used to verify the given explanation because the difference in proportions is statistically significant. ○ D. No. The results speak to a possible difference between the proportions of people over 55 and under 25 who dream in black and white, but the results are not statistically significant enough to verify the cause of such a difference. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? OA. Ho P1 P2 H₁ P₁ P₂ ○ D. Ho: P₁ #P₂ HP1 P2 Identify the test statistic. z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? OB. Ho P1 P2 H₁₁₂ O E. Ho P1 P2 H₁: D₁ D2 C. Ho: P₁ ≤P2 H₁: P1 P2 OF. Ho: D₁ =P₂ H₁: D₁ #P₂ The P-value is the significance level of a = 0.01, so proportion for those under 25. the null hypothesis. There is evidence to support the claim that the proportion of people over 55 who dream in black and white is greater than the

b. Test the claim by constructing an appropriate confidence interval. The 98% confidence interval is <(P₁ - P₂) <- <(P1-P2) (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? Because the confidence interval limits dream in black and white is 0, it appears that the two proportions are the proportion for those under 25. Because the confidence interval limits include values, it appears that the proportion of people over 55 who c. An explanation for the results is that those over the age of 55 grew up exposed to media that was displayed in black and white. Can these results be used to verify that explanation? ○ A. Yes. The results can be used to verify the given explanation because the difference in proportions is practically significant. B. No. The results speak to a possible difference between the proportions of people over 55 and under 25 who dream in black and white, but the results cannot be used to verify the cause of such a difference. ○ C. Yes. The results can be used to verify the given explanation because the difference in proportions is statistically significant. ○ D. No. The results speak to a possible difference between the proportions of people over 55 and under 25 who dream in black and white, but the results are not statistically significant enough to verify the cause of such a difference. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? OA. Ho P1 P2 H₁ P₁ P₂ ○ D. Ho: P₁ #P₂ HP1 P2 Identify the test statistic. z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? OB. Ho P1 P2 H₁₁₂ O E. Ho P1 P2 H₁: D₁ D2 C. Ho: P₁ ≤P2 H₁: P1 P2 OF. Ho: D₁ =P₂ H₁: D₁ #P₂ The P-value is the significance level of a = 0.01, so proportion for those under 25. the null hypothesis. There is evidence to support the claim that the proportion of people over 55 who dream in black and white is greater than the

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 23PFA

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