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Quality characteristic of filling teabags- The label weight on the package indicates that the mean is 5.5 grams of tea per bag. If the bags are under filled two problems arise. First, customer tea will no be as strong. Second, company could be in violation of the truth and lending law. If the mean amount exceeds the label weight the company is giving away product. Getting an exact amount is a problem because of the variations in temperatures ands humidity. About 170 bags per minute are filled. The following data (stored in the Teabags) are the weights, in grams, of a sample of 50 tea bags produced in one hour by one machine:
5.25 5.42 5.49 5.54 5.585.29 5.42 5.50 5.54 5.585.32 5.44 5.50 5.55 5.615.32 5.44 5.50 5.55 5.615.34 5.44 5.51 5.56 5.625.36 5.45 5.52 5.56 5.635.40 5.45 5.53 5.57 5.655.40 5.46 5.53 5.57 5.675.40 5.47 5.53 5.57 5.675.41 5.47 5.53 5.58 5.77
a. Construct a 99% confidence interval estimate for the population mean weight of the tea bags.b. Is the company meeting the requirement set fourth on the label that the mean of tea in a bag is 5.5 grams?c. Do you think the assumption needed to construct the confidence interval estimate in (a) is valid.
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Use a visual display to a categorical variable with four classifications. Which one would you use - the bar chart, the pie chart, or the pareto diagram? Explain"
It was found that in a sample of 215 teenage boys, 59% of them have received speeding tickets. What is the 95% confidence interval of the true proportion of teenage boys who have received speeding tickets?
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In an attempt to justify this claim, the representative will poll a randomly selected sample of dish owners. The probability that none of the dish owners in the sample subscribes to at least one premium movie channel.
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Company have MBA degrees. Also, 64 percent of the managers have MBA degrees. Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
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