Testing Claims About Proportions. In Exercises 7–22, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value or critical value(s), then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim.  Accuracy of Fast Food Drive-Through Orders In a study of Burger King drive-through orders, it was found that 264 orders were accurate and 54 were not accurate. For McDonald’s, 329 orders were found to be accurate while 33 orders were not accurate (based on data from QSR magazine). Use a 0.05 significance level to test the claim that Burger King and McDonald’s have the same accuracy rates. a. Test the claim using a hypothesis test. b. Test the claim by constructing an appropriate confidence interval. c. Relative to accuracy of orders, does either restaurant chain appear to be better?

Question

Testing Claims About Proportions. In Exercises 7–22, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value or critical value(s), then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. 

Accuracy of Fast Food Drive-Through Orders In a study of Burger King drive-through orders, it was found that 264 orders were accurate and 54 were not accurate. For McDonald’s, 329 orders were found to be accurate while 33 orders were not accurate (based on data from QSR magazine). Use a 0.05 significance level to test the claim that Burger King and McDonald’s have the same accuracy rates.

a. Test the claim using a hypothesis test.

b. Test the claim by constructing an appropriate confidence interval.

c. Relative to accuracy of orders, does either restaurant chain appear to be better?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Advanced Topics in Statistics

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Durations of Pregnancies The lengths of pregnancies are normally distributed with a mean of 268 days...

A: a)The random variable x represents the duration of the pregnancy.The formula to convert the x value ...

Q: See You Later Based on a Harris Interactive poll, 20% of adults believe in reincarnation. Assume tha...

A: Consider X be a random variable which follows binomial distribution indicates the number of adults b...

Q: How hot does it get in Death Valley? The following data are taken from a study conducted by the Nati...

A: Mean:The formula for finding mean is shown below:

Q: Regarding a scatterplot matrix: a. Identify two of its uses. b. What property should the scatterplot...

A: a).Scatterplot matrix:A scatterplot matrix is defined as an array of scatterplots of the response va...

Q: In each of Exercises, we have provided a sample mean, sample standard deviation, and sample size. In...

A: The null and alternative hypotheses are stated below:

Q: Conclusions True or false: In hypothesis testing, it is never valid to form a conclusion of supporti...

A: Click to see the answer

Q: In each of Exercises, explain the effect on the margin of error and hence the effect on the accuracy...

A: Effect on margin of error:If the level of confidence decreases, then the corresponding critical valu...

Q: Which provides stronger evidence against the null hypothesis, a P-value of 0.06 or a P-value of 0.04...

A: Decision criterion:If the p-value of the test is less than or equal to the level of significance, re...

Q: Suppose x1 and x2 are predictor variables for a response variable y. a. The distribution of all poss...

A: a. Yes, the distribution of the response or dependent variable is the distribution of all the possib...