Question

In a random sample of 84 coffee shops in Vancouver, it is found that a latte...

In a random sample of 84 coffee shops in Vancouver, it is found that a latte costs an average of $4.65 with a standard deviation of $0.30. Using alpha = 0.05, determine if the average price is significantly higher than $4.50.

1.Fill in the blanks to construct the correct null and alternate hypotheses.

H0:                            [ Select ]                       ["p", "p-hat", "μ", "y-bar"]                                    [ Select ]                       ["<", "=", ">", "≠"]                                    [ Select ]                       ["4.50", "4.65"]      

HA:                            [ Select ]                       ["p", "p-hat", "μ", "y-bar"]                                    [ Select ]                       ["<", "=", ">", "≠"]                                    [ Select ]                       ["4.50", "4.65"]      

2.What is the value of the test statistic?

3.If a p-value of 0.0054 were found, what would the decision be? Fill in the blanks to make the sentence below correct.

                           [ Select ]                       ["Fail to reject H0.", "Reject H0."]         The average is                            [ Select ]                       ["significantly different from", "significantly less than", "significantly more than"]                                    [ Select ]                       ["$4.50", "$4.65"]         .

0 0
Add a comment Improve this question Transcribed image text
Answer #1

1) H0 : µ = 4.5

Ha : µ > 4.5

2) Test statistic =\frac{\bar{X}-\mu}{s/\sqrt{n}}

                         =\frac{4.65-4.5}{0.3/\sqrt{84}}

                         = 4.58

3) Since p-value is less than alpha, we should reject the null hypothesis.

Reject H0. The average is significantly more than $4.50

Add a comment
Know the answer?
Add Answer to:
In a random sample of 84 coffee shops in Vancouver, it is found that a latte...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A recent national survey found that high school students watched an average (mean) of 7.6 movies...

    A recent national survey found that high school students watched an average (mean) of 7.6 movies per month with a population standard deviation of 0.5. The distribution of number of movies watched per month follows the normal distribution. A random sample of 41 college students revealed that the mean number of movies watched last month was 7.0. At the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students? State the null...

  • A recent national survey found that high school students watched an average (mean) of 7.1 movies...

    A recent national survey found that high school students watched an average (mean) of 7.1 movies per month with a population standard deviation of 1.0. The distribution of number of movies watched per month follows the normal distribution. A random sample of 41 college students revealed that the mean number of movies watched last month was 6.6. At the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students? State the null...

  • A recent national survey found that high school students watched an average (mean) of 7.8 movies...

    A recent national survey found that high school students watched an average (mean) of 7.8 movies per month with a population standard deviation of 0.5. The distribution of number of movies watched per month follows the normal distribution. A random sample of 30 college students revealed that the mean number of movies watched last month was 7.3. At the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students? State the null...

  • Required information [The following information applies to the questions displayed below.] A recent national survey found...

    Required information [The following information applies to the questions displayed below.] A recent national survey found that high school students watched an average (mean) of 6.6 DVDs per month with a population standard deviation of 1.00 hour. The distribution of DVDs watched per month follows the normal distribution. A random sample of 30 college students revealed that the mean number of DVDs watched last month was 6.00. At the 0.05 significance level, can we conclude that college students watch fewer...

  • The lengths of major league baseball games are approximately normally distributed and average 2 hours and...

    The lengths of major league baseball games are approximately normally distributed and average 2 hours and 50.1 minutes (170.1 minutes), with a population standard deviation of 18 minutes. It has been claimed that New York Yankee baseball games last, on the average, longer than the games of the other major league teams. To test the truth of this statement, a sample of eight Yankee games were randomly identified and the "time of the game" (in minutes) for each obtained. 199...

  • A local greenhouse sells coffee-tree saplings. They price their saplings based on the height of the...

    A local greenhouse sells coffee-tree saplings. They price their saplings based on the height of the plant. They have two workers, Susan and Karen, who measure the saplings for pricing. The greenhouse manager wants to determine if there is a significant difference in the measurements made by these two individuals. She has them measure the same set of 15 saplings. Assume that the differences are calculated as Susan – Karen. a) Select all of the correct null and alternative hypotheses....

  • The price to earnings ratio (P/E) is an important tool in financial work. A random sample...

    The price to earnings ratio (P/E) is an important tool in financial work. A random sample of 14 large U.S. banks (J. P. Morgan, Bank of America, and others) gave the following P/E ratios.† 24 16 22 14 12 13 17 22 15 19 23 13 11 18 The sample mean is x ≈ 17.1. Generally speaking, a low P/E ratio indicates a "value" or bargain stock. Suppose a recent copy of a magazine indicated that the P/E ratio of...

  • 8. A random sample of 25 college males was obtained and each was asked to report...

    8. A random sample of 25 college males was obtained and each was asked to report their actual height and what they wished as their ideal height. A 95% confidence interval for μd= average difference between their ideal and actual heights was 0.8" to 2.2". Based on this interval, which one of the null hypotheses below (versus a two-sided alternative)can be rejected? A. H0: μd= 0.5 B. H0: μd= 1.0 C. H0: μd= 1.5 D. H0: μd= 2.0 9. The...

  • Before the furniture store began its ad campaign, it averaged 147 customers per day. The manager...

    Before the furniture store began its ad campaign, it averaged 147 customers per day. The manager is investigating if the average has changed since the ad came out. The data for the 12 randomly selected days since the ad campaign began is shown below: 147, 128, 147, 149, 127, 137, 157, 139, 146, 151, 133, 124 Assuming that the distribution is normal, what can be concluded at the α = 0.01 level of significance? a. For this study, we should...

  • 1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value asso...

    1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value associated with our test statistic is greater than the significance level of the test we have chosen. c. our sample mean is smaller than the population mean. d. the p value associated with our test statistic is smaller than the significance level of the test we have chosen. 2. In a study of simulated juror decision making, researchers...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT