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A random sample of 400 was drawn from a normal distribution with astandard deviation of 5. The sample mean is 80. Determine the 95%confidence interval estimate of the population mean.
suppose that the random point x y is uniformly distributed on a circle with radius r centered at the origin. let r be
Use confidence intervals to determine whether or not (a) we can be 95% certain that the average woman considers herself overweight as compared to her ideal weight.
a find the area under the standard normal curve between z -1.9 and z 1.17 p-1.9 lt z lt 1.17. give your answer
According to the 1996 Statistical Abstract of the United States, 7.6% of the scores on the verbal portion of the Scholastic Aptitude Test (SAT) exceeded 600.
messages are transmitted from low speed terminals and arrive at a message concentrator at a poisson rate of 600hr.they
Determine the Conclusion: Assume that you obtained a p-value less than your selected value for alpha, provide a conclusion about your research hypothesis.
a repeated-measures analysis of variance with a sample of n 8 participants produces df within treatments 14. what is
Bulloch County has never allowed liquor to be sold in restaurants. However in 3 months, county residents are scheduled to vote on a referendum to allow liquor to be sold by the drink.
Data collected by a child development scientist produced a 95% confidence interval for the mean age, μ (in weeks) at which babies began to craw as [21.4, 31.6]
when n 20 and p 0.1 i can approximate the distribution of the sample proportion with a normal distribution with mean 2
The mean top of knee height of a sitting mate is 20.7 in.
a fair 4 sided die has the numbers 123 and 4 on its faces. the die is rolled 20 times. the random variable x represents
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