"Trydint" bubble-gum company claims that 4 out of 10 people prefer their gum to "Eklypse". Test their claimat the 99 confidence level.The null and alternative hypothesis in symbols would be:Ho: p = 0.4H₁: p = 0.4Ho: μ = 0.4H₁: μ = 0.4Ο Ho: μ < 0.4H1 : μ > 0.4O Ho:p ≤ 0.4H₁:p> 0.4O Ho:p> 0.4H₁: p < 0.4Ο Ho: μ 2 0.4H:μ < 0.4The null hypothesis in words would be:O The proportion of all people that prefer Trydint gum is less than 0.4.O The average of people that prefer Trydint gum is 0.4.The proportion of all people that prefer Trydint gum is greater than 0.4.The proportion of people in a sample that prefer Trydint gum is not 0.4O The average of people that prefer Trydint gum is not 0.4.O O OThe proportion of all people that prefer Trydint gum is 0.4The proportion of people in a sample that prefers Trydint gum is 0.4.Based on a sample of 440 people, 154 said they prefer "Trydint" gum to "Eklypse".(to 3 decimals)The point estimate is: 0.352The 99 % confidence interval is:to(to 3 decimals)

The company claims that 4 out of 10 people prefer their gum to "Eklypse."Sample size: The number of…

Answered: "Trydint" bubble-gum company claims…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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"Trydint" bubble-gum company claims that 4 out of 10 people prefer their gum to "Eklypse". Test their claim at the 95 confidence level. The null and alternative hypothesis in symbols would be: Ο Η : μ 2 0.4 Hy:μ 0.4 H₁:p 0.4 Ο Ho: μ 0.4 The null hypothesis in words would be: O The average of people that prefer Trydint gum is 0.4. The proportion of people in a sample that prefers Trydint gum is 0.4. O The proportion of all people that prefer Trydint gum is less than 0.4. O The proportion of all people that prefer Trydint gum is 0.4 O The proportion of all people that prefer Trydint gum is greater than 0.4. O The average of people that prefer Trydint gum is not 0.4. O The proportion of people in a sample that prefer Trydint gum is not 0.4 Based on a sample of 100 people, 19 said they prefer "Trydint" gum to "Eklypse". The point estimate (statistic) is: (to 3 decimals) Percentage Confidence z*-Value 80 1.28 90 1.645 95 1.96 98 2.33 99 2.58 p. (1-p) The Standard Error can be found using…
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A 95% confidence interval for u was given as -5.65 < u < 2.61. What would a test for Ho : µ = 0 vs H1 : µ # 0 conclude? A. reject the null hypothesis at a = 0.05 and all smaller a B. fail to reject the null hypothesis at a = = 0.05 and all smaller a C. reject the null hypothesis at a = 0.05 and all larger a D. fail to reject the null hypothesis at a = - 0.05 and all larger
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Assume we wish to test to see if the mean starting salary of statistics professors is different than the mean starting salary of biology professors: Let Ho: µStat = µBio versus Ha: µStat µBio at the alpha = .05 level of significance and we found the following 95% confidence interval: (126, 610) for µStat - µBio. We would reject Ho. We would Fail to Reject Ho. We would reject Ho based on a 90% confidence interval. We would fail to reject Ho based on a 90% confidence interval. Assume that we use the same sample to construct the 90% confidence interval. Please pick a choice from the following 4 options.
Sal knows that parties of people on average spend 75 minutes at their restaurant. They wonder if this average is significantly different on the weekends. They found the average time spent by the 30 parties which dined there this weekend was 82 minutes with a SD of 17 minutes. Assume an alpha of .05. The lower end of the 95% confidence interval is and the higher end of the 95% confidence interval is.
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A research group wants to estimate the proprtion, p, of americans who can speak a language other than English. By referencing past data, the group belive that more than 45% of Americans can do so. a. state the null and alternative hypotheses for testing the group's belief/ b. If the value of the test statistic is approximately 1.46, what is the conslusion (reject H0 of fail to reject H0) of the hypotesis test? with a-0.05 c. If the true balue of is 48%, did the researchers make an error? if so what type?
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15. Construct the confidence interval for the population mean μ. c = 0.90, X = 9.1, a = 0.2, and n = 58 A 90% confidence interval for u is S (Round to two decimal places as needed.)
sume a significance level of alpha equals 0.05 and use the given information to complete parts (a) and (b) below. Original claim: Less than 57 % of adults would erase all of their personal information online if they could. The hypothesis test results in a P-value of 0.0242 . a. State a conclusion about the null hypothesis. (Reject Upper H 0 or fail to reject Upper H 0 .) Choose the correct answer below. A. Reject Upper H 0 because the P-value is greater than alpha . B. Reject Upper H 0 because the P-value is less than or equal to alpha . C. Fail to reject Upper H 0 because the P-value is less than or equal to alpha . D. Fail to reject Upper H 0 because the P-value is greater than alpha . b. Without using technical terms, state a final conclusion that addresses the original claim. Which of the following is the correct conclusion? A. The…
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