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Question: Marriage. Suppose that men always married women 4 years younger than themselves. Draw a scatterplot of the ages of 6 married couples, with the husband's age as the explanatory variable. What is the correlation r for your data? Why?
A sample of 70 cut sheets yields a mean length of 12.14 feet. This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
A shopping mall has set up a promotion as follows. With any mall purchase, the customer gets to spin the wheel shown here. If the number I comes up, the customer wins $10.
What is one of the two differences between the way ZST or ZLT are calculated?
discuss reliability and validity in qualitative
To accomplish this goal, perform the following operations on the attached Excel data: Calculate the average Quiz Score [i.e. (points earned)/(points available)] for each student and Calculate the average Lab Report Score [i.e. (points earned)/(points..
we assume that the conditional distribution of xn n is binomial n theta and that n is poisson lambda. show that x has
the following problem should be answered in r. any answers partial or complete would be greaty appreicatedgenerate 50
Use the given degree of confidence and sample data to find the margin of error in estimating the population mean. Replacement times for washing machines 90% confidence; n =41 the sample mean (x-bar) =10.9 years s=2.3 years
a roulette wheel has 38 slots numbered 0 00 and 1 to 36.the slots 0 and 00 are colored green 18 of the others are red
What is the value of the population mean? What is the best estimate of this value? Explain why we need to use the t distribution. What assumption do you need to make?
an experiment was conducted to compare the mean lengths of time required for bodily absorption of two drugs a and b.
Carry out the suitable calculations to test for effect modification. Interpret your results.
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