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The lengths of pregnancies are normally distributed with a mean of 268 days and standard deviation of 15 days, if 64 women are selected, find the probability that they have a mean pregnancy between 266 days and 268 days.
twenty years ago postal employees worked for the postal service an average of 7.5 years. recently a sample of 100
listed below are the overhead widths in cm of seals measured from photographs and the weights in kg of the
An international marketer has said, "When political instability increases, the price of quality increases." Think about the potential issues with measurements and data collection. Is this a testable hypothesis?
construct the indicated confidence interval for the population mean micro using a a t-distribution. b if you had
there are 1000 students in the senior class at a certain high school. the high school offers two advanced placement
a community college mathematics department experimented with four different delivery methods for their intermediate
Determine the coefficient of correlation and the coefficient of determination. please show your calculations. Interpret the results.
At a certain university, the average cost of books per student was $330 per student last semsester. In a sample of 50 students this semester, their average cost was $355 with a standard deviation of $85.
The Weithoff company has a contract to produce 10000 garden hoses for a customer. Weithoff has 4 different machines that can produce this kind of hose.
If this study involved a repeated measures design (within subjects) comparing conditions with the same number of participants, how many participants would be in each group?
To determine if there is a relationship between grade performance and extracurricular participation, North Carolina state conducted a study of 112 students, recording the number of students in each of three extra-curricular categories, and each of..
Test the following hypotheses using the Traditional Method. You must show all the steps involved and the final statement must be phrased appropriately for the problem.
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