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If you wish to estimate a population mean with a sampling distribution error SE=0.24 using a 95% confidence interval and you know from prior sampling that is approximately equal to 7.9, how many observations would have to be included in your sample?
The number of observations that would have to be included in your sample is _____. (round up to the nearest observation)
Workers drive the company vehicle to purchase lunch versus returning to the office to pick up their personal vehicles in order to purchase their lunch?
If you had only one minute to estimate the standard deviation of a frequency distribution using only the information that can be obtained from a stem and leaf display, how would you do it and why?
The standard deviation is thought to be $750. How many card holders should be sampled? Your company charges a set dollar amount for each account in the sample.
find the value of the linear correlation coefficient r. x 22.6 36.6 15.6 35.0 47.5 y 7 6 6 2 6 a 0 b -0.478 c
The adult books 20 are nonfiction and of the children's books 103 are nonfiction.if a book is selected at random, find the probability that it will be fiction.
High compliance are 20%, 30% and 50% respectively, what are the expected net revenues for each alternative and what number of assistants should he hire?
What is the probability that a randomly selected student has an ACT Math score less than18? What is the probability that a random sample of 10 ACT test takers had a mean ACT Math score less than 18?
Carry out the suitable hypothesis test, at alpha = .05, to find out whether there is a relationship between school/work and stress.
the bullish sentiment was reported to be 48.7 oneweek earlier and 39.7 one month earlier. the sentiment measures are
1.i plan an experiment to test the latest conflicting diet programs. the factor for diet will involve three different
Let x be N(µ,σ2 ) and consider the transformation x=log(y) or equivalently y=exp(x). Find the mean and the variance of y by first determining E(exp(x)) and E[(exp(x)^2 ], by using the moment generating function of x.
Suppose you want to estimate the sample size for a multiple correlation analysis. There are five predictors in your study.
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