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Question: Manufacturing and Product Development During Summer 2013, Procter and Gamble (P&G) recalled 30 different types of cat and dog food because they may have been contaminated with Salmonella. While pets can become ill from eating contaminated foods, the Centers for Disease Control and Prevention also reminded people to wash their hands thoroughly after handling pet food. Independent random samples of P&G cat foods and dog foods were obtained, and each was tested for Salmonella. For cat food, n1 = 1250 and 50 were contaminated, and for dog food, n2 = 1448 and 87 were contaminated. Is there any evidence to suggest that the true proportion of contaminated cat food is different from the true proportion of contaminated dog food? Use a = 0.05.
a boiler has five identical relief valves. the probability that any particular valve will open on demand is0.90.
A physician claims that as soon as his patients have a positive pregnancy test, he is generally able to predict the sex of the baby and that his probability.
in a certain very large city the department of transportation d.o.t. has organized a complex system of bus
Jim owns three real estate offices in Anytown. He has decided to open one more office, but cannot decide between hometown or uptown as the towns where he wants to locate.
What were the political, social, and economic characteristics of early states in the Sudanic belt and Sub-saharan belts of Africa
The test question was if this difference between the test statistics and the stated life of the battery was significant? The .05 significant level was selected for the test. Which is the correct statement?
In your capacity as assistant to the administrator at Freedom Hospital, you have been asked to develop a graphical presentation that focuses on the insurance carried by the geriatric patients at the hospital. The data file Patients contains data f..
Of the 105 adults who were currently separated or divorced, 33 reported having been assaulted. Test if there is an association between having been assaulted and currently living with your partner or spouse. Compute the odds ratio.
A recent survey of 50 executives who were laid off from their previous position revealed it took a mean of 26 weeks for them to find another position.
If you assume returns follow a normal distribution, which investment would give a better chance of getting at least a $40 million return? Explain how your answer could change if you knew returns followed a skewed distribution instead of a normal d..
A study has shown that the probability distribution of X, the number of customers in line (including the one being served, if any) at a checkout counter.
What would be the critical value under the null hypothesis if the size of your test were 5%?
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