ZuoTi.Pro
Question

Question 5Multiple Choice Worth 2 points) (07.02 MC An experiment was conducted to test the effect of a new stain remover. Twenty stains were treated with stain remover A and stain remover B for a week, then the number of stains removed was measured. A significance test was conducted at the a 0.10 level for the difference in the means of the number of stains removed between stain remover A and stain remover B. The test resulted in t = 1.37 and p = 0.17. If the alternative hypothesis in question is Ha·HA-Hs 0, where μΑ equals the mean number of stains removed with stain remover A and μΒ equals the mean number of stains removed with stain remover B, what conclusion can be drawn? O There is a significant difference in the mean effectiveness of two stain removers. O There is sufficient evidence that stain remover A works better than stain remover B. OThe proportion of stains that stain remover A removed is greater than the proportion of stains removed by stain remover B O There is insufficient evidence that the proportion of stains removed by stain remover A and stain remover B is different. There is insufficient evidence that there is a difference in the mean effectiveness of stain remover A and the mean effectiveness of stain remover BQuestion 1(Multiple Choice Worth 2 points) (07.01 MC) A fast-food chain claims one large order of its fries weighs 170 grams. Joe thinks he is getting less than what the restaurant advertises. He weighs the next 12 random orders orders What conclusion can bet of fries before he eats them and finds the sample mean is 165.9 grams and the standard deviation is 1 1.98 grams, what conclusion can be drawn at α-0.10? There is not sufficient evidence to prove the fast-food chain advertisement is true OThere is sufficient evidence to prove the fast-food chain advertisement is false. Joe has sufficient evidence to reject the fast-food chains claim OJoe does not have sufficient evidence to reject the fast-food chains claim. O There is not sufficient data to reach any conclusion.

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


Answer Date: 28/01/2019 5) The conclusion is that p-value in this context is greater than 0.10 which is 0.17, so the null hypothesis is not rejected at 10% level of significance. There is insufficient evidence to indicate that there is a difference in the effectiveness of stain remover A and the mean effectiveness of stain remover B. The result is not statistically significant. 6) To test the hypothesis is that the mean fries weighs is less than 170 grams at 10% Significance level The null and alternative hypothesis is, Ho H 170 Ha: μ<170 The t-test statistics is,165.90-170 11.98/ v12 1.243 The t-test statistics is -1.243 The t-critical value is, The sample size is small and left-tailed test. Look in the column headed α = 0.10 and the row headed in the t distribution table by using degree of freedom is, d.f.-n-1 -12-1 The t-critical value is-1.796 DecisionThe statistical decision is that the t-test statistics which is -1.243 is less than t-critical value which is-1.796, so the null hypothesis is fails to reject at 10% level of significance. There is insufficient evidence to indicate that the mean fries weighs is less than 170 grams. The result is not statistically significant. Joe does not have sufficient evidence to reject the fast-food chains claim.

0 0
Add a comment
Know the answer?
Add Answer to:
Question 5Multiple Choice Worth 2 points) (07.02 MC An experiment was conducted to test the effect...
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

  • Question 5(Multiple Choice Worth 2 points) (07.02 MC) An experiment was conducted to test the effect...

    Question 5(Multiple Choice Worth 2 points) (07.02 MC) An experiment was conducted to test the effect of a new stain remover. Twenty stains were treated with stain remover A and stain remover B for a week, then the number of stains removed was measured. A significance test was conducted at the a 0.10 level for the difference in the means of the number of stains removed between stain remover A and stain remover B. The test resulted in t =...

  • Question 3(Multiple Choice Worth 2 points) (07.01 MC) A fast-food chain claims one small order of...

    Question 3(Multiple Choice Worth 2 points) (07.01 MC) A fast-food chain claims one small order of its tater tots weighs 90 grams. Ava thinks she is getting less than what the restaurant advertises. She weighs the next 14 random orders o tater tots before she eats them and finds the sample mean is 89.3 grams and the standard deviation s 37 gams. What con us can be drawn at a There is not sufficient evidence to prove the fast-food chain...

  • An experiment was conducted to test the effect of a new dietary supplement for weight loss....

    An experiment was conducted to test the effect of a new dietary supplement for weight loss. Ten men and 10 women were given the supplement daily for a month, then the amount of weight each person lost was determined. A significance test was conducted at the ? = 0.05 level for the difference in the means of the number of pounds lost between men and women. The test resulted in t = 2.178 and p = 0.03. If the alternative...

  • A study was conducted on the effect of an oral antiplaque rinse on plaque buildup on...

    A study was conducted on the effect of an oral antiplaque rinse on plaque buildup on teeth. Twelve people whose teeth were thoroughly cleaned and polished were randomly assigned to two groups of six subjects each. Both groups were assigned to use oral rinses (no brushing) for a two-week period. Group 1, the control group, received a rinse that, unknown to the subjects, contained no antiplaque agent. Group 2 used a rinse that contained an antiplaque agent. A plaque index...

  • A study was conducted on the effect of an oral antiplaque rinse on plaque buildup on...

    A study was conducted on the effect of an oral antiplaque rinse on plaque buildup on teeth. Eighteen people whose teeth were thoroughly cleaned and polished were randomly assigned to two groups of nine subjects each. Both groups were assigned to use oral rinses (no brushing) for a two-week period. Group 1, the control group, received a rinse that, unknown to the subjects, contained no antiplaque agent. Group 2 used a rinse that contained an antiplaque agent. A plaque index...

  • 2). a.b. Suppose babies born after a gestation period of 32 to 35 weeks have a...

    2). a.b. Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2600 grams and a standard deviation of 800 grams while babies born after a gestation period of 40 weeks have a mean weight of 3000 grams and a standard deviation of 485 grams. If a 35-week gestation period baby weighs 2350 grams and a 41-week gestation period baby weighs 2750 grams, find the corresponding Z-scores. Which baby weighs less relative to...

  • 2. An experiment was conducted to compare the mean reaction times to two types of traffic...

    2. An experiment was conducted to compare the mean reaction times to two types of traffic signs: prohibitive (No Left Turn) and permissive (Left Turn Only). Ten drivers were included in the experiment. Each driver was presented with 40 traffic signs, 20 prohibitive and 20 permissive, in random order. The mean time to reaction and the number of correct actions were recorded for each driver. The mean reaction times (in milliseconds) to the 20 prohibitive and 20 permissive traffic signs...

  • Kelang e. 2 IUUIS, J9 Ulules, 15 Selurus. Question Completion Status: QUESTION 6 4 points Save...

    Kelang e. 2 IUUIS, J9 Ulules, 15 Selurus. Question Completion Status: QUESTION 6 4 points Save Answer For which of the following scenarios would an Analysis of Variance (ANOVA) be appropriate? Determining if the distribution of party affiliation (Democrat, Republican, Independent) has changed since the last election Determining if the proportion of the population that are left handed is more than 10% Determining whether Income Level (Low, Middle, High) and Credit Score (Poor, Fair, Good, Excellent) are independent Determining if...

  • Given X, and x, distributions that are normal or approximately normal with unknown o, and on,...

    Given X, and x, distributions that are normal or approximately normal with unknown o, and on, the value of t corresponding to X, - X, has a distribution that is approximated by a Student's t distribution. We use the convention that the degrees of freedom is approximately the smaller of n - 1 and n, - 1. However, a more accurate estimate for the appropriate degrees of freedom is given by Satterthwaite's formula: 2 2 xn2 522 +$22) d.f. z...

  • A. Identify the test statistic=_____ (Round to two decimal places) The P-value is=_____ (Round to three...

    A. Identify the test statistic=_____ (Round to two decimal places) The P-value is=_____ (Round to three decimal places) What is the concluion for this hypothesis test? A. Fail to reject Upper H0. There is sufficient evidence to warrant rejection of the claim that the variation of maximal skull breadths in 4000 B.C. is the same as the variation in A.D. 150. B. Reject Upper H 0. There is insufficient evidence to warrant rejection of the claim that the variation of...

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