If the p-value were to be 0.005, state and justify your decision.O Accept Ho because the p-value < a.O Accept Ho because the p-value > a.O Reject Ho because the p-value > a.Reject Ho because the p-value < a.O Fail to reject Ho because the p-value > a.O Fail to reject Ho because the p-value < a.The correct conclusion is that we Select an answer conclude that the average response score ofSelect an answer recent graduates is Select an answer ✓ 7.What level of concern do you have for the validity of your results?O Valid - while the sample size is less than 30, the symmetry in the distribution means this isn't aconcernO Questionablethere is likely to be some response bias and n < 30O Questionablethere is likely to be some nonresponse biasO Questionable - the sample size is less than 30O QuestionableO Questionablethere is likely to be some nonresponse bias and n < 30there is likely to be some response bias The college of science at a particular university has 324 alum in a given year. Each of them are sent asurvey after they graduate, and 27 of them are returned. The survey asks many things, chiefly among themhow prepared they feel enterring the real world upon graduation. The results (on a scale of 1-10) show anaverage of 7.4 with a standard deviation of 2.9. Is there significant evidence to conclude that the scores ofthese recent graduates is better than 7 at the 0.05 significance level? Note that there's evidence that thisdistribution is symmetric.What are the hypotheses?Ho:μ7 vs H₁:μ = 7Ho: μ < 7 vs Hy:μ > 7Ho: μ < 7 vs Hy :μ27O Ho:μ = 7 vs H₁:μ #7What is probability statement for the p-value?O 2P(Z test statistic)OP(T test statistic)2P(Ttest statistic)OP(Z test statistic)O None of the aboveIf the p-value were to be 0.005, state and justify your decision.O Accept Ho because the p-value < a.Accept Ho because the p-value > a.O Reject Ho because the p-value > a.O Reject Ho because the p-value < a.O Fail to reject Ho because the p-value > a.O Fail to reject Ho because the p-value < a.

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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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In a research study, conducted by the National Institute of Health, 25 individuals were sampled measuring their triglyceride levels. If the distribution of triglyceride levels for 25 to 55 year old females has a mean of 211 mg/dl and a standard deviation of 46 mg/dl, what is the probability that our sample mean will be above 240?
A dataset from 1987 contains information about credit card applications and approvals for 690 applicants. We are interested in looking at the amount of debt across industries, specifically between information technology, healthcare, real estate, and education. The following values are scaled down for ease of analysis. From the sample, 45 are in information technology with an average of $4.03 dollars in debt and a standard deviation of $3.88. 52 are in the healthcare industry with an average of $5.84 dollars in debt and a standard deviation of $6.58. 30 are in real estate with an average of $4.79 dollars in debt and a standard deviation of $5.43. 30 are in education with an average of $8.21 dollars in debt and a standard deviation of $6.25. Fill in the hypotheses below: Ho: All the means are equal. Ha: At least one mean is different from the others. ✓ Part 2 of 3 Complete the following ANOVA summary table (a = 0.01). Round your answers to three decimal places, if necessary, and round…
The average McDonald's restaurant generates $3.6 million in sales each year with a standard deviation of 0.9. Trent wants to know if the average sales generated by McDonald's restaurants in Kentucky is different than the worldwide average. He surveys 27 restaurants in Kentucky and finds the following data (in millions of dollars): 4.1, 2.8, 4.4, 4.5, 5.3, 5, 3.7, 2.9, 3.8, 4.8, 3.6, 2.3, 3.7, 2.9, 2.9, 4, 1.1, 5.2, 2.9, 5, 4, 4, 5.9, 3.2, 2.2, 4.3, 3.8 Perform a hypothesis test using a 3% level of significance. Step 1: State the null and alternative hypotheses. Ho: [? v] ? v На: ? ? v (So we will be performing a Select an answer test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer v with distribution mean and distribution standard deviation Step 3: Find the p-value of the point estimate. P( ? v ? v = P( ? ♥ ?…
You may need to use the appropriate technology to answer this question. Data were collected on the top 1,000 financial advisers. Company A had 239 people on the list and another company, Company B, had 121 people on the list. A sample of 16 of the advisers from Company A and 10 of the advisers from Company B showed that the advisers managed many very large accounts with a large variance in the total amount of funds managed. The standard deviation of the amount managed by advisers from Company A was s₁ = $583 million. The standard deviation of the amount managed by advisers from Company B was s₂ = $484 million. Conduct a hypothesis test at a = 0.10 to determine if there is a significant difference in the population variances for the amounts managed by the two companies. What is your conclusion about the variability in the amount of funds managed by advisers from the two firms? State the null and alternative hypotheses. 2 2 H₂:0 2 Find the value of the test statistic. (Round your answer…
Part 1 of 4 Victoria, an accomplished marathon runner, claims that the standard deviation for her time to run a 26.2 mile marathon is less than 17.5 minutes. To test her claim, Victoria looks up 11 of her race times (in minutes): 227.2, 233.3, 259.7, 265.8, 252.1, 228.8, 222.6, 202.9, 214.5, 237.2, 267.7 Perform a hypothesis test using a 9% level of significance to test Victoria's claim. Step 1: State the null and alternative hypotheses. 17.5 Ha:0
A dataset from 1987 contains information about credit card applications and approvals for 690 applicants. We are interested in looking at the amount of debt across industries, specifically between information technology, healthcare, real estate, and education. The following values are scaled down for ease of analysis. From the sample, 44 are in information technology with an average of $4.03 dollars in debt and a standard deviation of $3.88. 55 are in the healthcare industry with an average of $5.84 dollars in debt and a standard deviation of $6.58. 33 are in real estate with an average of $4.79 dollars in debt and a standard deviation of $5.43. 20 are in education with an average of $8.21 dollars in debt and a standard deviation of $6.25. Fill in the hypotheses below: Ho: Select an answer Ha: Select an answer
Many firms use on-the-job training to teach their employees computer programming. Suppose you work in the personnel department of a firm that just finished training a group of its employees to program, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 77 and 2 respectively, and the distribution of scores is bell-shaped and symmetric. Suppose the trainee in question received a score of 74. Compute the trainee's z-score. O A. z = -0.94 OB. z = -1.50 O C., z = 0.94 O9 z = 1.50
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For each day of last year, the number of vehicles passing through a certain intersection was recorded by a city engineer. One objective of this study was to determine the percentage of days that more than 425 vehicles used the intersection. If the mean data was 375 vehicles per day and the standard deviation was 25 vehicles: (c) Suppose the relative frequency distribution for the data is bell-shaped, then what percentage of days between 325 and 425 vehicles used the intersection ?
The college of science at a particular university has 322 alum in a given year. Each of them are sent a survey after they graduate, and 23 of them are returned. The survey asks many things, chiefly among them how prepared they feel enterring the real world upon graduation. The results (on a scale of 1-10) show an average of 8.9 with a standard deviation of 2.3. Is there significant evidence to conclude that the scores of these recent graduates is better than 8 at the 0.01 significance level? Note that there's evidence that this distribution is symmetric. What are the hypotheses? Ho : μ 8 Ho : μ 8 Ho μ = 8 vs H₁ : µ ‡ 8 : Ho : μ‡8 vs H₁ : µ = 8 What is probability statement for the p-value? 2P(T test statistic) 2P(Z #test statistic) O P(Z >test statistic) OP(T test statistic) None of the above If the p-value were to be 0.008, state and justify your decision. Reject Ho because the p-value a. Fail to reject Ho because the p-value > a. Accept Ho because the p-value a. Fail to reject Ho…
Many firms use on-the-job training to teach their employees computer programming. Suppose you work in the personnel department of a firm that just finished training a group of its employees to program, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 73 and2, respectively, and the distribution of scores is bell-shaped and symmetric. Suppose the trainee in question received a score of 66. Compute the trainee's z-score. O A. z= 0.88 O B. z= -3.50 O C. z= 3.5 O D. z= - 0.88 O Time Remaining: 01:26.44 Next 1-44 of 44 arch 耳人 81 F N. DELL
2. Ms. Palac, a sociologist, made a study on the age in years of a woman at the time of her first marriage. She randomly selected a sample of 24 and 21 married women from Village A and Village B, respectively. The following data are the mean and standard deviation for each group: Village A: x = 18.63 and s = 5.54 Village B: x = 24.90 and s = 5.54 Test the hypothesis that the women in Village A get married younger than women in Village B. Use 0.10 significance level. Step 1: Null and Alternative Hypothesis Ho: Ha: Step 2: Level of Significance and appropriate test statistic Step 3: Determine the Critical Region Degrees of Freedom (df): Critical Region: Step 4: Compute the z or t value Computations: Step 5: Decide whether to accept or reject Ho Step 6: Conclusion

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