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At one point the average price of regular unleaded gasoline was $3.713.71per gallon. Assume that the standard deviation price per gallon is $0.070.07per gallon and use Chebyshev's inequality to answer the following.
(a) What percentage of gasoline stations had prices within 44 standard deviations of the mean?
(b) What percentage of gasoline stations had prices within 2.52.5 standard deviations of the mean? What are the gasoline prices that are within 2.52.5 standard deviations of the mean?
(c) What is the minimum percentage of gasoline stations that had prices between $3.503.50 and $3.923.92?
almost all medical schools in the united states require applicants to take the medical college admission test mcat. on
Assuming that the process is operating correctly according to specifications, what is the probability that a sample will indicate that an adjustment is needed?
How many companies respond that taxes are too high are public companies?
In hypothesis testing when is a two-tail test used in lieu of a one-tail test?
A drug company is considering marketing a new local anesthetic. The effective time of the anesthetic the company is currently producing has a normal distribution with an average of 7.5 minutes and a standard deviation of 1.2 minutes.
Now that you are an adult, you decide to test one of the truisms passed along by your mother: "Cheaters never win in the end." You randomly assign a group of 20 children to either cheat or to play fair on a scavenger hunt.
Do you think it is reasonable to generalize the conclusion of the test in Part (a) to all California high schools? Explain. Would it be reasonable to use the paired t test with the data on percentage of students taking one or more AP classes? Explai..
Implantable heart pacemakers contain small circuit boards called substrates. These substrates are assembled, cut to shape, and fired. Some of the substrates will separate, or delaminate, making them useless.
In a two-tailed hypothesis testing at significance level α of 0.05, the test statistic is calculated as 2. If P(X >2) = 0.03, then we have sufficient evidence to reject the null hypothesis.
Draw parallel modified boxplots, showing outliers. Describe the distribution of golden retriever mandible lengths. Estimate the mean of the mandible lengths for Carolina dingos. Briefly explain your answer.
The management of White companies considering a new method of assembling its golf cart. Compute which assembly time using the new method is faster.
Suppose that 56% of students at a university are in the College of Business. A sample of 803 students is taken. What is the probability that the sample proportion of students in the College of Business is greater than 53%?
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