We take a random sample of 25 scores from a Biology Exam and the sample mean is 80 (the population scores are normally distributed) The known standard deviation = 12. What is the value of Upper Confidence Limit at 90% CI. 092 O 84 O 90 0 0 O 86

Q: A sample of n=25 scores has a mean of 68. Find the z-score for this sample. If it was obtained from…

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A: From the given information, µ = 100 and σ = 15.

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Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25

A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ

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A: Find the distribution that has to be used to perform hypothesis testing in the given situation:The…

Q: A sample of n=25 scores has a mean of 68. Find the z-score for this sample. If it was obtained from…

A:

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Q: Show all calculation for question 2 part a - f

A: Step 1: Step 2: Step 3: Step 4:

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Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

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