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pick one of the following problems and answer the following questions.
1) State the Null and Alternative Hypotheses. 2) Calculate the test statistic. 3) Sketch a drawing of the Normal Distribution and where your test statistic would be in relation to the mean. 4) Find the p-value associated with the test statistic found in Step 2. 5) State your conclusion based on Your p-value. Interpret your conclusion - provide evidence as to why your test statistic and p-value
support or do not support the hypotheses stated in Step I.
Problem 1Based on information in Statistical Abstract of the United States (116th Edition); the average annual miles driven per vehicle in the United States is 11.1 thousand miles, with c = 600 miles. Suppose that a random sample of 42 vehicles owned by residents of Chicago showed that the average mileage driven last year was 10.75 thousand miles. Does this indicate that the average miles driven per vehicle in Chicago is significantly different from (higher or lower than) the national average? Use a 0.01 level of significance.
Problem 2The Nero Match Company sells matchboxes that are supposed to have an average of 40 matches per box, with c = 9 matches. A random sample of S6 Nero matchboxes shows the average number of matches per box to be 42.5 matches. Using a 5% level of significance, can you say that the average number of matches per box is more than 40 matches?
a manufacturer of semiconductors has a 10 defect rate in the semiconductors produced. every hour fifteen
A microeconomist wants to determine how corporate sales are influenced by capital and wage spending by companies. She proceeds to randomly select 26 large corporations and record information in millions of dollars.
A scatter diagram that plots the values of the residuals against the values of the dependent variable
The population variances are 4.6 and 5.0 respectively. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades?
Duracell Ltd claim that the life of their batteries in motorised soft toys is approximately normally distributed with a mean of 102.9 hours and a standard deviation of 16.5 hours.
A number of minor automobile accidents occur at various high-risk intersections in Teton County despite traffic lights. The Traffic Department claims that a modification in the type of light will reduce these accidents.
For this example, what specific test might you use to test whether the average number of offspring has changed over the years? Why would you use this specific type of test? Describe a brief scenario where you may need to use nonparametric statistic..
Give an example of a polynomial of a degree 2 that satisfies the following two conditions: (1) the coefficient of x^2 is 1 and (2) the polynomial cannot be factored. Explain why the polynomial cannot be factored.
The world's smallest mammal is the bumblebee bat. Shown to the right are weights(in grams) from a sample of those bats. Use the traditional method and significance level of .05 to test the claim that these bats come from the same population having..
For the samples summarized below, test the hypothesis at =0.05 that the two variancees are equal.
Does this article accurately describe the law of large numbers? Explain your answer.
In which of the following markets do all firms sell the same standardized product?
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