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Standard Deviation
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A medical researcher treats 100 subjects with high cholesterol with a new drug. The average decrease in cholesterol level is = 80 after two months of taking the drug. Assume that the decrease in cholesterol after two months of taking the drug follows a normal distribution, with unknown mean ...
Calculate the standard deviation
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Hey, A company has moved to new premises and the management have reason to believe that the number of internal telephne calls will increase. At the old premises the daily number of calls could be described by a normal distribution with a mean of 110. For 5% of the days, the number of calls was...
Standard Deviation
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On one of my homework assignments I had this question: A coin is tossed 72 times. Find the standard deviation for the number of heads that will be tossed. Could you please help me get started? Then I will be fine. Thank you, Cheryl :confused:
Standard Deviation
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The question reads, What is the standard deviation for the sample data below: 154,216,171,188,229,203,184,173,181,147 Round the answer to the nearest tenth. I have done this several times but my answer keeps coming up wrong. Can anyone explain this to me>? View more questions Search
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