Question

# A hypothesis test is conducted to test the null hypothesis that the mean is less than...

A hypothesis test is conducted to test the null hypothesis that the mean is less than 12. Use a 0.01 level of significance.

What type of test is this?

• Right tail
• Two tail
• Left tail

What is the critical value?

• 2.33
• -2.33
• 1.78
• correct answer is not given

Suppose the test statistic was -2.50 What is the conclusion?

• Fail to reject Ho. There is not sufficent evidence to support the claim that the mean is less than 12.
• Reject Ho. There is not sufficent evidence to support the claim that the mean is less than 12.
• Reject Ho. There is sufficent evidence to support the claim that the mean is less than 12.
• Fail to reject Ho. There is sufficent evidence to support the claim that the mean is less than 12.

The      is the probability of getting a test statistic at least as extreme as the one representing the sample data, assuming that the null hypothesis is true.

• level of signifcance
• sample mean
• p value
• critical value

#### Homework Answers

Answer #1

A hypothesis test is conducted to test the null hypothesis that the mean is less than 12. Use a 0.01 level of significance.

What type of test is this?

Left Tail

What is the critical value?

-2.33

Suppose the test statistic was -2.50 What is the conclusion?

Reject Ho. There is sufficent evidence to support the claim that the mean is less than 12.

The      is the probability of getting a test statistic at least as extreme as the one representing the sample data, assuming that the null hypothesis is true.

p value

Answer #2

The 24 consonant sounds comprise six stops (plosives): p, b, t, d, k, g; the fricatives f, v, θ (as in thin), ð [eth] (as in then), s, z, [esh] (as in ship), Ʒ (as in pleasure), and h; two affricatives: t∫ (as in church) and dƷ (as the j in jam); the nasals m, n, ŋ (the sound that occurs at the end of words such as young); the lateral l; the postalveolar or retroflex r; and the semivowels j (often spelled y) and w. These remain fairly stable, but Inland Northern American differs from RP in two respects: (1) r following vowels is preserved in words such as door, flower, and harmony, whereas it is lost in RP; (2) t between vowels is voiced, so that metal and matter sound very much like British medal and madder, although the pronunciation of this t is softer and less aspirated, or breathy, than the d of British English.

answered by: Gamesome Goshawk
Know the answer?
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
• ### Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...

Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. A test of sobriety involves measuring the subject's motor skills. A study of n = 20 randomly selected sober subjects take the test and produce a mean score of X = 41.0, and we know that o = 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is...

• ### For the folowing claim, find the null and alternative hypotheses, test statistic, critical value, and draw...

For the folowing claim, find the null and alternative hypotheses, test statistic, critical value, and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population. Answer parts a-d. Claim: The mean IQ score of statistics professors is less than 119. Sample data: n 11, x 117, s 14. The significance level is ?-005 Click the icon to view a table of critical t-values. a. Choose the correct null hypothesis (Ho) and altenative hypothesis...

• ### Use a t-test to test the claim about the population mean μ at the given level...

Use a t-test to test the claim about the population mean μ at the given level of significance α using the given sample statistics. Assume the population is normally distributed. Claim: μ# 25; α:0.05 Sample statistics: x 29.9, s-44, n 11 What is the value of the standardized test statistic? The standardized test statistic is(Round to two decimal places as needed.) What is the P-value of the test statistic? P-value (Round to three decimal places as needed.) Decide whether to...

• ### Identify the null hypothesis, alternative hypothesis, P-value, conclusion about the null hypothesis, and final conclusion that...

Identify the null hypothesis, alternative hypothesis, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Test the claim about the population mean u at the level of significance a. Assume the population is normally distributed. Claim:us 45; a = 0.01; 0 = 4.3 Sample statistics: x = 46.8, n = 40 Fail to reject Ho. There is enough evidence at the 1% level of significance to support the claim. Reject Ho. There is enough evidence...

• ### Alocal retailer daims that the mean waiting time is less than 5 minutes. A random sample...

Alocal retailer daims that the mean waiting time is less than 5 minutes. A random sample of 20 waiting times has a mean of 3.5 minutes with a standard deviation of 21 minutes. Ata -0.01, test the retailer's claim. Assume the distribution is normally distributed The test statistic was calculated to be 3.194 and the critical value from the distribution table is 2.539. What decision and conclusion can you make? Reject the wil hypothesis, there is enough evidence to conclude...

• ### distributed Use a t-test to test the claim about the population mean ji at the given...

distributed Use a t-test to test the claim about the population mean ji at the given level of significance a using the given sample statistics. Assume the population is normally Claim: #26; a=0.10 Sample statistics: X = 26.5, s=4.3, n = 11 What are the null and alternative hypotheses? Choose the correct answer below O A. Ho +26 OB. Ho: 226 H, = 26 H <26 OCH p=26 OD. HY S 26 H, #26 H>26 What is the value of...

• ### A bank claims that the mean waiting time in line is less than 4.1 minutes. A...

A bank claims that the mean waiting time in line is less than 4.1 minutes. A random sample of 60 customers has a mean of 4 minutes. Assuming a population standard deviation of 0.6 minute, test the bank's claim with an ? = 0.05 level of confidence. ?0 = ___________________________________ ?? = ___________________________________ Test Statistic = __________________________ Alpha level of significance= __________________ Classical Critical Value = ____________________ P-value = _______________________________ ________Conclusion: A) reject ?0 B) fail to reject ?0 ________Interpretation:...

• ### The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject...

The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject He when the level of significance is (a) a = 0.01, (b) a = 0.05, and (C) a = 0.10. P = 0.0695 (a) Do you reject or fail to reject He at the 0.01 level of significance? O A. Fail to reject H, because the P-value, 0.0695, is greater than a = 0.01. O B. Fail to reject H, because the P-value, 0.0695,...

• ### Use technology and a t-test to test the claim about the population mean p at the...

Use technology and a t-test to test the claim about the population mean p at the given level of significance using the given sample statistics. Assume the population is normally distributed Claim je> 70, a = 0.10 Sample statistics. x=71,3,5 = 29, n. 23 What are the null and alternative hypotheses? Choose the correct answer below. O A. Ho #70 OB. Hy 270 HAN= 70 HAR < 70 O C. W, 70 OD. H 570 HA #70 HA 70 What...

• ### Use technology and a t-test to test the claim about the population mean i at the...

Use technology and a t-test to test the claim about the population mean i at the given level of significance at using the given sample statistics. Assume the population is normally distributed Claim: H > 72; « = 0.05 Sample statistics: X = 73.7, 5 = 3.3, n = 26 What are the null and alternative hypotheses? Choose the correct answer below. O A. Ho: 272 OB. Ho: = 72 Hau<72 H:#72 OC. H: 72 OD. Ho: HS72 HA=72 HA...

ADVERTISEMENT
Free Homework Help App

Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?

Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT