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Question: A sample of 17 states has the cigarette taxes (in cents) listed:
112 120 98 55 71 35 99 124 62
150 150 55 100 132 20 70 93
Find the 98% confidence interval for this tax in all 50 states, the District of Columbia, and Puerto Rico.
After popping, the un-popped kernels were counted. There were 89. Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
A month of sales data are collected on sales of different types of computer products Run the t-tests to determine:
A) Please develop the Expected frequencies table based on the above information.
Pharmacies continually monitor their prescription filling process. A local pharmacy has noted that the time to fill a prescription for a generic antibiotic is normally distributed, with a mean of 13.3 minutes and a standard deviation of 2.8 minute..
The Financial Advisor exam has a mean of 500 and a standard deviation of 20. If the bank chooses to hire either Steve or Mark based solely on their exam performance, who is the bank more likely to hire? Show evidence for your answer.
You own a Pepsi bottling plant, and you are concerned about filling the bottles to the correct level. Should you conduct a one-tailed or two-tailed hypothesis test? Explain.
The statistics professor plans class carefully so that length of his classes are uniformly distributed between 50 and 52 minutes. Determine the probability that class will be less than 50.25 minutes.
When adding or subtracting expressions, how do you identify the like terms?
Observations are taken on net revenue from sales of Hughes, HNS, and satellite services to see if offering rebates is beneficial for the organization.
Normally distributed with a mean of 9.75g and a standard deviation of 0.08g. Find the weights that separate the top 5% and the bottom 5%.
444 voters to predict whether the budget will pass. Suppose the budget has 53% of the voters. What is the probability that the newspaper's sample will lead it to predict defeat?
A paper manufacturer has a production process that operates continuously throughout an entire production shift. The paper is expected to have a mean length of 11 inches, and the standard deviation of the length is 0.02 inches.
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