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Each student in a class of 80 rolls 8 dice in order to perform inference about the mean of all dice rolls (which happens to be 3.5).Suppose each student uses his or her sample to test the true null hypothesis that the population mean is 3.5 against the two-sided alternative. About how many of these 80 tests should reject at the ? = 0.05 level?
The standard deviation of all possible x values is called the?
1. which variable has the weakest relationship with the quadriceps strength index 120degs? provide a rationale for your
a software developer is interested in finding what the best color theme should be for an engine diagnostic program for
question a nutritionist thinks the average person with an income below the poverty level gets less than the recommended
Which of the F statistics are significant and what is the effect size for the main effect of fertilizer type? What size effect is this?
The Weschsler IQ test has a μ =100 and a σ = 15. A vitamin company said if people took vitamin X for 30 days their IQ would improve. A simple random sample of 49 people took the vitamins for 30 days. They then took the IQ test. The mean IQ of the ..
Select an activity you do on a regular basis (e.g., cooking a meal, cleaning the house, doing homework, etc.) and discuss how you could apply statistical quality control to improve the quality of the output of the activity you choose.
a large wind turbine has blade span diameters of 110 m. it sits high off the ground where the average wind speed is 7
The resistances of carbon resistors of 1500 ohm nominal value are normally distributed with µ = 1500 and standard deviation = 200. What proportion of resistors is expected to have resistance greater than 1150 ohm?
For the following scores, find the (A) mean, (B) median, (C) sum of squared deviations, (D) variance, and (E) standard deviation:
explain some of the differences between the method of distribution functions the transformation method for finding the
assume that you are testing ho p .5 vs. ha p gt .5 and that based on the collected data the p-value of the test is
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