Question
In: Statistics and Probability
A magazine article reported that 13% of adults buy takeout food every day. A fast food...
A magazine article reported that 13% of adults buy takeout food every day. A fast food restaurant manager surveyed 250 customers and found that 40 said that they purchased takeout food everyday. At 0.01 level of significance, is there sufficient evidence to believe the article’s claim? Express numerical answers in two decimals only.
Is the test one-tailed?
What is the sample proportion?
What is the null hypothesis?
What is the alternative hypothesis?
What is the critical value?
What is the computed value of the test statistic?
Decision and Conclusion?
Solutions
Expert Solution
Above test is two tailed test.
Sample proportion = 0.16
Conclusion : As we fail to reject the null hypothesis at 1% loa we conclude that the articals claim is false.
Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you satisfied with my answer then please please like this.
orchestra answered 1 year agoRelated Solutions
A study of fast-food intake is described the the paper "What People Buy From Fast-Food Restaurants"...
A study of fast-food intake is described the the paper "What
People Buy From Fast-Food Restaurants" (Obesity, 2009,
pages 1369-1374). Adult customers at three hamburger chains
(McDonald's, Burger King and Wendy's) in New York City were
approached as they entered the restaurant at lunchtime and asked to
provide their receipt when exiting. The receipts were then used to
determine what was purchased and the number of calories consumed
was determined. In all, 3857 people participated in the study. The
sample...
An article in Fortune magazine reported on the rapid rise of fees and expenses charged by...
An article in Fortune magazine reported on the rapid
rise of fees and expenses charged by mutual funds. Assuming that
stock fund expenses and municipal bond fund expenses are each
approximately normally distributed, suppose a random sample of 12
stock funds gives a mean annual expense of 1.63 percent with a
standard deviation of .31 percent, and an independent random sample
of 12 municipal bond funds gives a mean annual expense of 0.89
percent with a standard deviation of .23...
An article in Fortune magazine reported on the rapid rise of fees and expenses charged by...
An article in Fortune magazine reported on the rapid rise of
fees and expenses charged by mutual funds. Assuming that stock fund
expenses and municipal bond fund expenses are each approximately
normally distributed, suppose a random sample of 12 stock funds
gives a mean annual expense of 1.63 percent with a standard
deviation of .31 percent, and an independent random sample of 12
municipal bond funds gives a mean annual expense of 0.89 percent
with a standard deviation of .23...
In an article about the cost of health care, Money magazine reported that a visit to...
In an article about the cost of health care, Money
magazine reported that a visit to a hospital emergency room for
something as simple as a sore throat has a mean cost of $328
(Money, January 2009). Assume that the cost for this type
of hospital emergency room visit is normally distributed with a
standard deviation of $92. Answer the following questions about the
cost of a hospital emergency room visit for this medical
service.
What is the probability that...
An article in Fortune magazine reported on the rapid rise of fees and expenses charged by...
An article in Fortune magazine reported on the rapid
rise of fees and expenses charged by mutual funds. Assuming that
stock fund expenses and municipal bond fund expenses are each
approximately normally distributed, suppose a random sample of 12
stock funds gives a mean annual expense of 1.63 percent with a
standard deviation of 0.45 percent, and an independent random
sample of 12 municipal bond funds gives a mean annual expense of
0.93 percent with a standard deviation of 0.20...
In an article about the cost of health care, Money magazine reported that a visit to...
In an article about the cost of health care, Money
magazine reported that a visit to a hospital emergency room for
something as simple as a sore throat has a mean cost of $328
(Money, January 2009). Assume that the cost for this type
of hospital emergency room visit is normally distributed with a
standard deviation of $92. Answer the following questions about the
cost of a hospital emergency room visit for this medical
service.
What is the probability that...
An article in Fortune magazine reported on the rapid rise of fees and expenses charged by...
An article in Fortune magazine reported on the rapid
rise of fees and expenses charged by mutual funds. Assuming that
stock fund expenses and municipal bond fund expenses are each
approximately normally distributed, suppose a random sample of 12
stock funds gives a mean annual expense of 1.60 percent with a
standard deviation of .33 percent, and an independent random sample
of 12 municipal bond funds gives a mean annual expense of .88
percent with a standard deviation of .25...
An article in Fortune magazine reported on the rapid rise of fees and expenses charged by...
An article in Fortune magazine reported on the rapid
rise of fees and expenses charged by mutual funds. Assuming that
stock fund expenses and municipal bond fund expenses are each
approximately normally distributed, suppose a random sample of 12
stock funds gives a mean annual expense of 1.50 percent with a
standard deviation of 0.38 percent, and an independent random
sample of 12 municipal bond funds gives a mean annual expense of
0.73 percent with a standard deviation of 0.40...
An article in Parenting magazine reported that 35% of Americans needed a vacation after visiting their...
An article in
Parenting magazine reported that 35% of Americans needed a vacation
after visiting their families for the holidays. Suppose this is the
true proportion of Americans who feel this way. A random sample of
200 Americans is taken. Let X be the number of people who feel that
way in this random sample.
a) What is the mean of
X?
b) Using the normal
approximation, what is the probability that more than 80 people in
the sample feel...
a trade magazine routinely checks the drive through service times of fast food restaurants. a 95%...
a trade magazine routinely checks the drive through service
times of fast food restaurants. a 95% confidence interval that
results from examining 605 customers in one fast food chains drive
through has a lower bound of 170.1 seconds and upper bound of 173.1
seconds. what does this mean?
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- What is the auxiliary space and space complexity for a dynamic programming algorithm with time complexity...
- This is a Discussion Board Question for Laboratory Procedures 2. Why is very important to advise...
- You are given three investment alternatives to analyze. The cash flows from these three investments are...
- Write about a psychological disorder that you found interesting and why, what did you learn about...
- CEO pay is a 'hot button' issue in many countries today. The average CEO's pay is...
- What makes information valuable to decision makers? What makes it useful?
- You have a parallel-plate 6.33 × 10-6 F capacitor that is charged to 0.00861 C. While...
ADVERTISEMENT