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a 100 students are enrolled in a science class the average score on the common final exam is 80 with a standard
assume the random variable x is normally distributed with a mean of 50 and a standard deviation of 7 find the
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question 1 a an analyst remarked when the sample size is large the sample mean is as likely to lie above the
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suppose sps professors have an average life normally distributed of 73 years with a population standard deviation of 6
for the a and observed significance level p-value pair indicate whether the null hypothesis woud be rejected a 0025
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