The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.250.25​, and the sample statistics include nequals=11501150 subjects with 265265 saying that they smoked a cigarette in the past week. Find the value of the test statistic.

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

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A:

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A: Complete solution and answer is given in the image uploaded below  Thanks!

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A:

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Q: Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test.…

A: Test is that whether the mean proce has increased.

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A:

Q: What is the z-score for this raw score?

A: Let ,  Our aim is to find the Z-score .

Q: If a z-score is 0, it is on the mean. True or False

A:

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A: Given that, Mean = 72 Standard deviation = 7

Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: Suppose the null hypothesis is rejected. State the conclusion based on the results of the test.…

A: According to the provided data, it is supposed that the null hypothesis is rejected. The null and…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given Population mean = 140 Population standard deviation = 40 Score =X= 44

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 14, 15, 25 Round your…

A: Given data: 45, 34, 65, 14, 15, 25 n = 6 To calculate: Compute the standard error of the mean

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A: Dear students as per guidelines we answer the first three subparts only. Please post other subparts…

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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.