Assume that all​ grade-point averages are to be standardized on a scale between 0 and 5. How many​ grade-point averages must be obtained so that the sample mean is within 0.007 of the population​ mean? Assume that a 95​% confidence level is desired. If using the range rule of​ thumb, σcan be estimated as range 4            =  5−04 =1.25.                       4 Does the sample size seem​ practical?   The required sample size is nothing. ​(Round up to the nearest whole number as​ needed.) Does the sample size seem​ practical?     A. ​Yes, because the required sample size is a fairly large number.   B. ​No, because the required sample size is a fairly small number.   C. ​Yes, because the required sample size is a fairly small number.   D. ​No, because the required sample size is a fairly large number.

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many…

A: Solution: From the given information, confidence level is 0.95, σ=1.25 and E=0.009.

Q: Assume that all​ grade-point averages are to be standardized on a scale between 0 and 5. How many​…

A: Formula for the sample size needed to estimate a population mean is

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

A: Suppose that  is the population mean grade point average.

Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

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Q: The required sample size is (Round up to the nearest whole number as needed.)

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

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Q: Assume that all grade-point averages are to be standardızed on a scale between 0 and 5. How many…

A: Standard Deviation = σ = (max-min)/4 = (5-0)/4 = 1.25 Margin of Error = E = 0.014 Confidence…

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Q: Assume that all​ grade-point averages are to be standardized on a scale between 0 and 4.How many​…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many…

A: Given: Margin of error (E) = 0.007 Confidence level = 0.95 Population standard deviationσ=1.25

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A: As the information is said to be assumed, so I assumed some values.

Q: Assume that all​ grade-point averages are to be standardized on a scale between 0 and 5. How many​…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 6. How many…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

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Q: Assume that all grade-point averages are to be standardized on a scale between O and 4. How many…

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Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

A: Given that ,Margin of error,,Confidence level,,Using formula,,