A newsletter publisher believes that less than 68% of their readers own a Rolls Royce. For marketing purposes, a potential advertiser wants to confirm this claim. After performing a test at the 0.05 level of significance, the advertiser decides to reject the null hypothesis. What is the conclusion regarding the publisher's claim?

Q: In testing hypotheses, if the consequences of rejecting the null hypothesis are very serious, we…

A: Null hypo. proposes that there is no difference in a set of given values.

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A: Null Hypothesis: H0: p = 0.49 Alternative Hypothesis: Ha: p < 0.49 The decision is  to reject the…

Q: If the p-value found in an experiment is 0.85. We reject the null hypothesis. True False

A:

Q: Suppose the p-value for a hypothesis test was .0574. At the a = .05 level of significance, should…

A: It is given that the p-value is 0.0574. The significance level is 0.05. We have to write the…

Q: the difference in the null hypothesis and the alternative hypothesis?

A: In testing of hypothesis, sometimes exact sampling distribution of the test statistic can be…

Q: n general, if sample data are such that the null hypothesis is rejected at the ? = 1% level of…

A: α = 1% or 0.01   ___________________________    P-value (One Tailed ) = P-value (2 Tailed)2

Q: In conducting a significance test, is it easier or harder to reject the null hypothesis when the…

A: Decision rule :Reject Null hypothesis if z statistic > zα/2 critical value at α level of…

Q: Which provides stronger evidence against the null hypothesis, a P-value of 0.06 or a P-value of…

A: Decision criterion:If the p-value of the test is less than or equal to the level of significance,…

Q: A statistical test involves the following null and alternative hypotheses.

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Q: A newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing firm believes…

A: Given that, a newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing…

Q: In the one-sample z-test, the null hypothesis states that:

A: Null hypothesis and alternative hypothesis is denoted by H0 and Ha.

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Note : Thank you for posting the question! Since your question has more than 3 parts, we have solved…

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A:

Q: A significance test with a one-sided alternative hypothesis yields a pp-value of 0.100.10. If the…

A: For the one sided alternative hypothesis test, the p value is given as 0.10

Q: A newsletter publisher believes that over 68% of their readers own a personal computer. Is there…

A: According to the provided information, a newsletter publisher believes that over 68% of their…

Q: The ?2 value for a one-tailed (upper tail) hypothesis test at 95% confidence and a sample size of 20…

A: Here, n=20. The degrees of freedom is, df=n-1    =20-1    =19

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: If you decided to use a one-tailed test and failed to reject the nul hypothesis, but found that the…

A: One-tailed test: It is a test used in testing of hypothesis. It indicates the chances of effect in…

Q: ​If, in a​ (two-tail) hypothesis​ test, the​ p-value is 0.1064​, what is your statistical decision…

A:

Q: A newsletter publisher believes that less than 32% of their readers own a laptop. For marketing…

A: Decision : Reject the null hypothesis.

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A:

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A: The null hypothesis and the alternative hypothesis are given below:

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A:

Q: how should a decision that fails to reject the null hypothesis be​ interpreted?

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A: Consider that p is the true proportion of adults that did not attend college believe in…

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A:

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A: Decision criterion:If the p-value of the test is less than or equal to the level of significance,…

Q: According to the National Highway and Traffic  Safety Administration,  the proportion of fatal…

A: D) The conditions for hypothesis testing of proportion are: np≥10n(1-p)≥10, here, n represents…

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Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern plke over 20…

A: a) Denote p as the true proportion of guests who catch pike over 20 pounds.

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: Given that  Population proportion p=0.47 Sample size n=1008 Let X denotes the number of Chevrolet…

Q: A newsletter publisher believes that over 20 % of their readers own a Rolls Royce. For marketing…

A: In this case, a test is required to see whether over (more) than 20% of the reader owns a Rolls…

Q: The smaller the observed p-value, the more evidence you have against the null hypothesis. Select…

A:

Q: A newsletter publisher believes that less than 68 % of their readers own a Rolls Royce. For…

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Q: Test the following null hypotheses using a significance level of .05.  π = .5; p = .55; N = 100

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A: Given Solution:

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A:

Q: According to the Centers for Disease Control and Prevention (CDC), the mean BMI of U.S. men of age…

A: Sample mean of given data: Sum of numbers = 8644.65 Total numbers = 315 Sample mean = X  = 27.4…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.