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Trevor is interested in purchasing the local hardware/sporting goods in the small town of Dove creek, Montana. After examing accounting records for the past several years, he found that the store has been grossing over $850 per day about 60% of the business days it is open. Estimate the probability that the store will gross over $850
a. at least 3 out of 5 business days
b. at least 6 out of 10 business days
c. fewer than 5 out of 10 business days
d. fewer than 6 out the next 20 business days. If this actually happened, might it shake your confidence in the statement p = 0.60? Might it make you suspect that p is less than 0.60? Explain.
e. more than 17 out of the next 20 business days. If this actually happened, might you suspect that p is greater than 0.60. Explain.
In terms of the standard scores for both sections, the score of which section was better? What are the z-scores for both sections?
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A random sample of 25 injections resulted in a variance of 0.135 test if the apparatus has a greater variance than the desired one.
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Using the 0.10 level of significance, is there evidence that the population mean is above $300?
Fair die is rolled 10 times. Determine the probability that the odd number (1, 3 or 5) will occur less than 4 times?
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Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
A person runs one mile to his house as fast as he can. It is equally likely that he will run at an average speed of 3 miles per hour, 6 miles per hour, and 9 miles per hour.
Develop a 95% confidence interval for the mean amount of household income for sub- scribers to Young Professional magazine. Interpret this interval.
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