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Geyser in yellowstone national park has a mean time of 85 minutes between eruptions with a standard deviation of 21.25 minutes interval time between eruptions is normally distributed find the probability that is a sample of 30eruption intervals the average interval of time between eruptions was more than 75 minutes.
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p -value.
In classical hypothesis testing, test statistic is to critical value what the?
Find the probability that an eligible voter selected at random will have the following characteristics.
As part of study of the development of the thymus gland, researchers weighed the glands of five chick embryos after 14 days of incubation. Calculate the standard error of the mean.
A study of 35 professors showed that the average time they spent creating test questions was 13.5 minutes per question. The standard deviation of the population is 3.8. Which of the following is the 99% confidence interval for the average number o..
A distributor of pre-washed shredded lettuce is opening a new plant and considering whether to use mechanized process or manual process to prepare the product.
When the rats In the sample reach 10 weeks old, each rat is weighed. The mean weight for this sample is M=974. Sketch the appropriate distribution, and locate the critical region for the alpha level =.05.
12 mature citrus trees of one variety and 15 of another gave means and standard deviations of their heights as 13.8 and 12.9 ft (means), and 1.2 and 1.5 ft (standard deviations).
The standard deviation was 2. At α = .10, is the number of years' experience of the taxi drivers really less than the taxi company claimed?
The ________ is the probability of observing a sample value as extreme as, or more extreme than the value observed, given that the null hypothesis is true.
Why is statistical significance not necessarily of practical important difference to a business decision? Provide an example and explain.
What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?
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