Past experience indicates that the time required for high school seniors to complete a standardized test is a normal random variable with a standard deviation of 6 minutes. Test the hypothesis that o = 6 against the alternative that o<6 random sample of the test times of 25 high school seniors has a standard deviation s = 4.99. Use a 0.10 level of significance. dentify the null and alternative hypotheses. Select the correct choice below and fill in the answer boxes to complete your choice. Type integers or decimals. Do not round.) O A. Ho: o2 =| H,: 0? > O B. Ho: o? > OC. Ho: o< H,: 0? = O D. Ho: o - 6 dentify the critical region. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) O A. X >O O B. X< or x?> OC. < Find the test statistic.

Q: The Mayo clinic states that healthy cholesterol levels are below 200 mg/dL. You sample 64…

A: State the hypotheses.

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A: In this problem, we will use z-test to solve the test statistic since the population standard…

Q: A random sample of 64 second-graders in a certain school district are given a standardized…

A: Solution: Let X be the score. From the given information, n=64, x-bar=51.13 and σ=15.

Q: As a researcher, you were hired by MNG Clinic to estimate the average BMI of the adult population of…

A: Given: Standard Deviation = σ=15.50 Confidence Interval = 95% =0.95 Margin of Error =3

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A: Hypotheses:H0: σ² = 36H1: σ² ≠ 36(Note: The value 36 comes from squaring the standard deviation of…

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A:

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Given data,n1=40x1=46.6σ1=4.6n2=45x2=48.8σ2=2.4Compute value of test statistic?

Q: Do shoppers at the mall spend more money on average the day after Thanksgiving compared to the day…

A: t-test: If the given sample size is less than or equal to 30 and sample standard deviation is given.…

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A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

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Q: From a random sample of 64 high school seniors, the sample mean and standard deviation of the math…

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Q: A random sample of 49 cans of soda is obtained and the contents are measured. The sample mean is…

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A: (a)   Determine the type of study used.   The type of study used is determined below as follows:…

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A: For the given data Perform Z test for one mean .

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