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The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 94 inches, and a standard deviation of 14 inches. What is the probability that the mean annual snowfall during 49 randomly picked years will exceed 96.8 inches?
Ffinding that the mean sodium content is 324 mg, with a standard deviation of 35 mg. Find a 95 % confidence interval for the mean sodium content of this brand of hotdog.
Test the claim at alpha-.05 that the average wage has not changed by finding the p-value for the test.
Mean=63.6 Standard deviation=2.5 If 36 data points are arbitrarily chosen, determine the probability that mean is less than 64.
A company producing a standard line and a deluxe line of dishwasher has the following time requirements (in minutes) in departments where either model can be processed
The probability of drawing a 6 (to complete an inside straight) after discarding the ace.
According to a recent poll, 53% of Americans would vote for an incumbent president. If a sample of 100 people results in 45% who would vote for the incumbent, test the claim that the percentage is 53%. Use a .10 significance level.
What is the difference between the Wilcoxon signed-ranks test and the Wilcoxon rank-sum test? no minimum word count.
This is a question pertaining to multivariate contingency analysis and partial correlation coefficientSet .05 as the significance level, what is the partial correlation coefficient and the t ratio?
Population blood pressure (BP) of patients is normally distributed, with a mean of 127, and standard deviation of 8. A random sample of 49 patients in the hospital found an average BP of 125.
An educational study uses a simple pre-post design to assess the efficacy of a computer tutor for solving inequalities. Twelve pilot students participate. Each student is given a pre-test, then participates in six sessions using the tutor, then i..
If the speed of lights is 3.00x 10 to the power of 8 m/sec, how long does it take light to travel 2.29x 10 to the power of 11 m, the distance from the sun to Mars? Round to one decimal place.
The letters of the word PRESERVE are arranged at random. Then what is the probability that all the 3 E's occur together??
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