On your first exam, the average score was a 76% and the standard deviation was 4%. Assume that the distribution was normal, answer the following questions. Sketch the normal curve for each value. a) P(x>80) b) P(70

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A: Given,   Mean = 100 Standard deviation = 15

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A: 19)

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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.