HomeworkLib
Question

Easter candy expenditure per consumer is normally distributed with a standard deviation of $2.51. A candy...

Easter candy expenditure per consumer is normally distributed with a standard deviation of $2.51. A candy manufacturer claims that the average Easter candy expenditure per consumer is no more than $20. Fifteen consumers were randomly selected. The average Easter candy expenditure per consumer was found to be $21.22 with a standard deviation of $3.00. Can you reject the candy manufacturer's claim at α=.05?

For the hypothesis stated above, what is the test statistic?

a.

0.4861
b.

1.5750
c.

1.8825
d.

None of the answers is correct
e.

2.9824
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

test statistic,

t = (xbar - mu)/(s/sqrt(n))
t = (21.22 - 20)/(3/sqrt(15))
t = 1.5750

Option B

0 0
Add a comment
Know the answer?
Add Answer to:
Easter candy expenditure per consumer is normally distributed with a standard deviation of $2.51. A candy...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

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

  • Enter and expenditure per consumer is normally distributed with a standard deviation of 52.36. A candy...

    Enter and expenditure per consumer is normally distributed with a standard deviation of 52.36. A candy manufacturer claims that the average Easter candy expenditure per consumer is no more than 5 Senten consumers were randomly selected. The average Easter candy expenditure per consumer was found to be 541.18 with a standard deviation of 53.70. Can you reject the candy manufacturer's eam 017 to the hypothesis stated to what is the olisin

  • 2. ONLY ANSWER QUESTION 3 According to the empirical rule, approximately what percentage of normally distributed...

    2. ONLY ANSWER QUESTION 3 According to the empirical rule, approximately what percentage of normally distributed data lies within one standard deviation of the mean? 3. WHAT IS THE ALTERNATIVE HYPOTHESIS below? A manufacturer claims that 10% of women using the "pill" suffer from side effects. The Federal Drug Administration (FDA) believes that the manufacturer's claim is too low and decides to test the manufacturer's claim at α = 5 %.  A random sample of 900 women who use the manufacturer's...

  • 2. ONLY ANSWER QUESTION 3 According to the empirical rule, approximately what percentage of normally distributed...

    2. ONLY ANSWER QUESTION 3 According to the empirical rule, approximately what percentage of normally distributed data lies within one standard deviation of the mean? 3. An auto manufacturer claims that its new 4-cylinder Hybrid auto with manual shift averages 50 mpg under city driving conditions. A Federal Agency believes this claim is too high and decides to randomly test 25 of the manufacturer's 4-cylinder Hybrid autos with manual shift. The Agency determines the mean average mpg for the sample...

  • 2. When a new floral shop opened, a record of the daily number of phone calls...

    2. When a new floral shop opened, a record of the daily number of phone calls was kept. The records showed the following data. Let the number of calls be the random variable X. Use this summary to determine the probability that the number of phone calls is 2 per day. 1/30 1/15 1/10 3/15 7/15 3. The manufacturer of a particular battery pack for laptop computers claims its battery packs can function for 9 hours, on the average, before...

  • We did a quality control test on a candy company that claims their bags contain 341...

    We did a quality control test on a candy company that claims their bags contain 341 grams of candy. 17 bags of candy were tested and it is found that the average amount of candy in the bags is 340.5 grams with a standard deviation of 1.5 grams. we want to test the claim that the company is underfilling its candy bags. (assume population is normally distributed if needed). i) state the null and alternative hypothesis you would use to...

  • Part A. Score on 25 point test is normally distributed with mean 22 and standard deviation...

    Part A. Score on 25 point test is normally distributed with mean 22 and standard deviation 5.         You took a sample of 9 students. The mean for this group is 19.111111        Test the hypothesis that the performance of this group is different than the regular group. Use α=.05. What is the alternative hypothesis? What is the rejection region? Calculated z What is your decision? Yes or no? You believe that the group from an honors and would perform better than...

  • Question No 4 A music industry professional claims that the standard deviation of the amount of...

    Question No 4 A music industry professional claims that the standard deviation of the amount of money that an average teenager spends per month on music is less than $10. The sample standard deviation is estimated to be $14. The music professional surveys 23 students and finds that the mean spending is $37. Test the claim by using α=0.05 by traditional method. Question No 5 A report by the Gallup Poll stated that on average a woman visits her physician...

  • The length of an adult dwarf seahorse (hippocampus zosterae) is normally distributed with a standard deviation...

    The length of an adult dwarf seahorse (hippocampus zosterae) is normally distributed with a standard deviation of 1.25 mm. A marine biologist claims that the population mean length is less than 23 mm. They select 95 adult dwarf seahorses at random, and calculate their mean length to be 22.6 mm. Test the marine biologist’s claim at a 5% significance level. a) Define the parameter and random variable of interest. b) State the null and alternative hypotheses, and identify the claim....

  • SAMPLING DISTRIBUTION The manufacturer of a new compact car claims the miles per gallon (mpg) for...

    SAMPLING DISTRIBUTION The manufacturer of a new compact car claims the miles per gallon (mpg) for gasoline consumption is normally distribution with u = 26.3 mpg and standard deviation 6 = 9.0 mpg. A consumer agency is looking to verify the manufacturer's claim. If a sample of 36 cars are tested, what is the probability that the mean mpg 7 is (a) less than 23 mpg? (b) more than 29 mpg? (b) between 23 and 29 mpg?

  • A manufacturer claims his light bulbs have a mean life of 1500 hours. A consumer group...

    A manufacturer claims his light bulbs have a mean life of 1500 hours. A consumer group wants to test if their light bulbs do not last as long as the manufacturer claims. They tested a random sample of 220 bulbs and found them to have a sample mean life of 1490 hours and a sample standard deviation of 40 hours. Assess the manufacturer's claim. a) What is the null hypothesis? μ = 1500 x̄ = 1500 x̄ < 1500 μ...

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