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Based on a random sample of 175 respondents, the mean of the variable of interest has been calculated to be 44, and the standard deviation of the sample has been calculated to be 6.7. Based on this information,determine the range of values in which we can be 95% confident that the mean of the population for the variable of interest falls within. Use 2 as the standard error multiplier to determine the confidence interval (although to be more precise one could use 1.96 - either way its an estimate).
there are 40 students in an elementary statistics class. on the basis of years of experience the instructor knows that
Do the data contradict the hospital's claimed mean value per inventoried item and indicate that the average is less than $300? Use a = .05.
what are the degrees of freedom for hartleys test statistic for a one - factor anova with n1 5 n2 8 n3 7 n4 8 n5
An oil company can only afford to drill at eight sites, sequentially chosen. How many possibilities are there, in order of selection?
Calculate mean and SS for sample of difference scores.
find the minimum sample size you should use to assure that your estimate of will be within the required margin of error
According to the UK All Green and Bowling Association, male retirees spend an average of 15 hours of bowling per week. Suppose you are given a sample of 100 male retirees and that the population variance is 25. What is the probability that the sam..
a box of tulip bulbs contains six bulbs that produce yellow flowers and five bulbs that produce red flowers. four bulbs
We often hear you can lie with statistics. This is one way of saying statistics can be easily mis-communicated. Find one example of how statistics are mis-communicated and explain why there was a mis-communication and what you would do to correct ..
Rrequired service under the warranty. consider a new dealer. what is the probablity that the first claim under this warranty is the tenth car sold?
Ground motion of earthquakes.- Identify the experimental units for given study.- Identify the variables measured as quantitative or qualitative.
How does this probability compare to the probability that the word will be received correctly if we didn't use check bits, in which case all 4 bits would have to be received correctly for the word to be correct?
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