Recently,a Case of Food Poisoning Was Traced to a Particular

question 15

Multiple Choice

Recently,a case of food poisoning was traced to a particular restaurant chain.The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur.Despite the response from the restaurant chain,many consumers refused to visit the restaurant for some time after the event.A survey was conducted three months after the food poisoning occurred with a sample of 319 patrons contacted.Of the 319 contacted,29 indicated that they would not go back to the restaurant because of the potential for food poisoning.The 95% confidence interval for the true proportion of the market who still refuse to visit any of the restaurants in the chain three months after the event would be _____.

• A)[.059,.122]
• B)[.090,.091]
• C)[.000,.196]
• D)[.240,.339]
• E)[.118,.244]

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Definitions:

One-tailed Test

A hypothesis test where the region of rejection is on only one side of the sampling distribution.

Two-tailed Test

A two-tailed statistical hypothesis test that examines if a sample falls outside a specific range of values, testing for both exceeding and falling short of this range.

Expected Value

The mean value of a random variable, computed by multiplying each possible value by its probability and summing up these products.

Test Statistic

A value calculated from sample data during a hypothesis test used to determine the likelihood of the null hypothesis being true.