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A machine that manufactures automobile parts is estimated to produce defective parts 6 % of the time. If this estimate is correct, and 10 parts produced by this machine are randomly selected, what is the probability that more than 2 turn out to be defective? Round your answer to four decimal places.
In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of six students were given the exam before and after taking the course. The results are shown below:
Assume that the random sample of 200 light bulbs has mean life of 635 hours and standard deviation of 48 hours. Before applying Empirical Rule, what suppositions requires to be made about distribution of lifetimes of light bulbs?
Using the z table in Table E of Appendix C, what are the critical values for a two-tailed test when a = 0.03 .
What purpose does a multiple regression analysis serve? Give an example of how it might be used in marketing research.
Find the z score corresponding to a score of X = 60 for each of the following distributions:
The null hypothesis is that the distribution of mother's educational level is the same for both treatment groups. The value of the chi-square statistic is 7.422. Evaluate the P-value
If 10% of the parts produced from a manufacturing process are defective, what is the probability that there are 15 or more defectives in a random sample of 100 items?
What is the relationship between descriptive statistics and Affirmative Action ? Can using probability in market trending decisions lead to a bad decision? Explain?
Be sure to specifically identify the statistical formulas and what additional data you would need to determine your estimate(s).
A University Web server has five main components each with the same reliability. All five components must work for the server to function as intended.
A produce manager wants to estimate the mean size of coke bottle fills with 95 percent confidence. A preliminary sample of 12 bottles shows a sample standard deviation of 3 mil, and mean of 500.
What is the net income of SouthCo if unit sales are twice the break-even point for a given month?
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