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Rework Example 3 with
Example 3
With reference to Example 2, determine the minimum sample size needed to test the null hypothesis μ0 = 10 against the alternative hypothesis μ1 = 11 with β 0.06.
Example 2
Suppose that we want to test the null hypothesis that the mean of a normal population with σ2 = 1 is μ0 against the alternative hypothesis that it is μ1, where μ1 > μ0. Find the value of K such that > K provides a critical region of size α = 0.05 for a random sample of size n.
Use the 5% level of significance. (a) Define null and alternate hypotheses. (b) Determine the value of sample test statistic? (c) Determine(or estimate) P-value.
A sporting goods producer claims that the variance of the strengths of a certain fishing line is 15.9. A random sample of 15 spools has a variance of 21.8. At "alpha" = 0.01, can the claim be proven wrong
The consumer price index (CPI) is a measure of the average change in prices over time in a fixed market basket of goods and services typically purchased by consumers. One of the items in this market basket that affects the CPI is the price of oil ..
given a sample size of 65 with sample mean 726.2 and sample standard deviation 85.3we perform the following hypothesis
you are picking a bouquet of 20 flowers for your mother at random from a garden with 25 coneflowers 35 daisies and 42
Visits to Web sites. What kinds of Web sites do males aged 18 to 34 visit most often? Pornographic sites take first place, but about 50 percent of male Internet users in this age group visit an auction site such as eBay at least once a month. Inte..
When someone buys a ticket for an airline flight, there is a 90% probability that a person will not show up for the flight. Air America books 15 people on a commuter flight that can only seat 13 passengers.
if y is a random variable that has an f distributions with v1 numerator and v2 denominator degrees of freedom show
When 40 people used the Weight Watcher diet for one year, their mean weight loss was 3.0lb and the standard deviation was 4.9 lb (based on data from "Comparison of the Atkins, Ornish, Weight Watcher, and Zone Diets for Weight Loss and Heart Diseas..
A campus researcher wanted to investigate the factors that affect visitor travel time in a complex. multilevel building on campus.
Discuss the issue of statistical power in non-parametric tests (as compared to their parametric counterparts). Which type tends to be more powerful? Why?
At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.
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