A publisher reports that 69 % of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage isactually under the reported percentage. A random sample of 200 found that 60% of the readers owned a particular make of car. Is there sufficientevidence at the 0.10 level to support the executive's claim?Step 5 of 7: Identify the value of the level of significance.

The hypothesized proportion of readers owing a particular make of car, p0=69%, i.e., 0.69.The sample…

Answered: A publisher reports that 69 % of their…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A research article stated that there was a mean difference in depressive symptoms between male and female clients. The significance level for this study was set at .05. The p value obtained was .075. What does this mean? Explain.
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A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 298 people over the age of 55, 62 dream in black and white, and among 282 people under the age of 25, 20 dream in black and white. Use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a) Determine the hypothesis, Test statistic, and P-value b)Test the claim by constructing an appropriate confidence interval. c) An explanation given for the results is that those over the age of 55 grew up exposed to media that was mostly displayed in black and white. Can these results be used to verify that explanation? Use this information to determine whether the results can be used to verify the black and white media explanation.
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A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 307 people over the age of 55, 68 dream in black and white, and among 313 people under the age of 25, 12 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below.
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A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 317 people over the age of 55, 65 dream in black and white, and among 287 people under the age of 25, 11 dream in black and white. Use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. 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 altemative hypotheses for the hypothesis test? O A. Ho P1 sP2 H P, P2 O B. Ho P1 = P2 H, P, #P2 O C. H, P, P2 H, P, = P2 O D. Ho P1 =P2 H Pq
The mayoral challenger claims that less than 30% of residents over the age of 25 have bachelor’s degrees in our city. To test this claim, you survey 80 adults over the age of 25 and find only 18 possess bachelor’s degrees. At the 5% level of significance, is there enough evidence to SUPPORT the challenger’s claim? Null: Ho alternative:Ha (use u for mean and p for proportion)

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