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Question: Mileage ratings for cars and trucks generally come with a qualifier stating actual mileage will depend on driving conditions and habits. Ford is stating the Ecoboost F-150 pickup truck will get 19 miles per gallon with combined town and country driving. Assume the mean stated by Ford is the actual average, and the distribution has a standard deviation of 3 mpg.
a. Given the above mean and standard deviation, what is the probability that 100 drivers will get more than 19.2 miles per gallon average?
b. Suppose 1,000 drivers were randomly selected. What is the probability the average obtained by these drivers would exceed 19.2 mpg?
During the month, the actual total variable manufacturing overhead was $48,970 and the actual total fixed manufacturing overhead was $43,000. The actual level of activity for the period was 8,300 MHs. What was the fixed overhead budget variance fo..
In terms of measures of association, how is Lambda different from the other measures used for nominal level data?
1 a legislative committee consists of 13 democrats 7 republicans and 3 independents. a delegation of 3 is selected to
To estimate the number of typographical errors in a 65-page manuscript, a systematic sample of pages is selected by first selecting a random number between 1 and 10 and including in the sample that numbered page and every 10th page thereafter.
In a recent poll of 760 homeowners in the United States, one in five homeowners reports having a home equity loan that he or she is currently paying off. Using a confidence coefficient of 0.90, derive an interval estimate for the proportion of all..
Do you support Bob's claim that citizens in his area spend more than $75 per year? Explain why or why not. Find a 95% confidence interval for the true mean amount that citizens spend per year.
A sociologist wanted to determine whether there was a difference in the amount of time children aged 5-7 spent watching tv. what is the null hypothesis? Find the expected value.
Test the claim that the mean weight loss is greater than 0. Based on these results does the diet appear to be effective. Does the diet appear to have practical significance.
This section examines hypothesis testing, and calculating and interpreting basic parametric and non-parametric tests. You will learn the difference between a null and alternative hypothesis, and how to set up the hypothesis (the specific symbolic ..
At the 0.05 level, can we conclude that the geographical distribution of hotline callers could be the same as the U.S. population distribution?
There are four distinct types of human blood denoted by O, A, B and AB. Suppose that these types occur with the following frequencies: 0.45, 0.40, 0.10, 0.05, respectively. If 20 people are chosen at random, what is the probability that:
1. We are testing Ho: p = 0.5 vs Ha: p
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