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The birth weight of 8,500 had a mean of 27 hectograms and a standard deviation of 6 hectograms. Assuming that the birth weights are normally distributed, how many weighted between 12 and 24 hectograms?
four married couples have bought 8 scats in the same row for a concert. in how many different ways can they be seated?a
a hospital conducted a study of waiting time in its emergencyroom. the hospital has a main campus and three satellite
For the following statement, write the null hypothesis and the alternative hypothesis. Also label which one is the claim.
What is standard deviation for the sampling distribution of the sample proportions, rounded to three decimal places?
question consider the following record of sales for a product for the last 100 days. sales unitsnumber of days
a sample of 148 college students at a large university reports getting an average of 6.85 hours of sleep last night
A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime.
There are two coins, one with probability p1 of Heads and the other with probability p2 of Heads. One of the coins is randomly chosen.
Statistical Hypothesis test for the given sample
a large chain retailer purchases a certain kind of electronic device from a manufacturer. the manufacturer indicates
Construct a confidence interval for p 1 minus p 2 p1-p2 at the given level of confidence.
What is the approximate standard deviation of this value? Would you feel comfortable declaring the results significant at the 5% level? Explain.
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