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23 September, 02:38

Suppose the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. At a 68% confidence level, (one standard deviation from the mean), about how many of the samples' confidence intervals would you expect to contain the population mean?

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  1. 23 September, 03:33
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    Since the total sample is 200 (100%) & the mean is 300. with + 1 & b-1 standard deviation it applies for 68% of the population, hence:

    200 x 68% = 136
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