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Describe an alternative to counterbalancing as a means of controlling confounding variables. Give an example to back up your answer.
Does this data provide evidence at the .05 significance level that there is a difference in the proportion of humorous ads in British versus American trade magazines? Please show work.
Evette has 41 1/2ft. of string. She wants to cut it into pieces 3 3/4ft. long. How many pieces of string will she have? how much string remains, if any?
Estimate the proportion of infants whose mothers experienced toxemia during pregnancy. Use 95% confidence level and doctors think that more than 20% of the infants their mothers experienced toxemia. Is that correct?
consider two random variables with standard deviations equal to 1.5 and 2.1. the standard deviation of the average of
A survey found that women's heights are normally distributed with mean 63.6 in and standard devistion 2.5 in. a branch of the military requires women's heights to be between 58 in and 80 in. What is the percentage of women who meet the height requ..
if the age of an initial cardiac incident heart attack or sudden cardiac arrest is normally distributed with a
Verify the computer"s calculations by checking the interval given for the first sample against your result in (b). Use the x reported by the software. (d) How many of the 25 confidence intervals contain the true mean = 460?
Provided an example of a research problem at any organization that would benefit from the employ of either descriptive statistics or probability distribution statistics.
As a part of your proposals. you need to submit demographic information to help demonstrate that the location chosen by the management teams will be a good investment.
The population are shorter than 66 inches, what is the probability a randomly selected member of this population is between 66 and 76 inches tall?
a researcher conducted a study on the effects of stress on migraines. the researcher computed the number of migraines
What is the critical value of the Chi-square? Compute the value of Chi-square. What is your decision regarding H0?
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