A sample of eight repair records for a certain fiber-optic component was drawn, andthe cost of each repair, in dollars, was recorded with the following results:3235192327222616Form a 98% prediction interval for the succeeding cost of repair.(18.30,31.20)(18.25,31.75)O (5.39,44.11)(4.75,45.25)

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Answered: A sample of eight repair records for a…

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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The following table is a frequency distribution for road rage incidents during one week: Sunday: 5, Monday: 5, Tuesday: 11, Wednesday: 12, Thursday: 11, Friday: 18, Saturday: 7 At the 5% significance level, do the data provide sufficient evidence that road-rage incidents are more likely to occur on some days than on others?
Five pulse rates are randomly selected from a set of measurements. The five pulse rates have a mean of 76.6 beats per minute. Four of the pulse rates are 82, 59, 84, and 89. a. Find the missing value. b. Suppose that you need to create a list of n values that have a specific known mean, Some of the n values can be freely selected. How many of the n values can be freely assigned before the remaining values are determined? (The result is referred to as the number of degrees of freedom.)
The national distribution of fatal work injuries in a country is shown in the table to the right under National %. You believe that the distribution of fatal work injuries is different in the western part of the country and randomly select 6231 fatal work injuries occuring in that region. At a = 0.05 can you conclude that the distribution of fatal work injuries in the west is different from the national distribution? Complete parts a through d below. Equipment Cause National % 44% Western Frequency Transportation 2895 18% 1160 Assaults Falls Harmful fumes 14% 803 13% 754 9% 532 Fires 2% 87 O B. The distribution of fatal work injuries in the west is the same as the expected distribution. O C. The distribution of fatal work injuries in the west is 44% transportation, 18% equipment, 14% assaults, 13% falls, 9% harmful fumes, and 2% fires. Which hypothesis is the claim? O Ho V H. b. Determine the critical value, Yo. and the rejection region. Y = 11.071 (Round to three decimal places as…
c. Provide a 95% prediction interval estimate for a particular y, given Xp = 50. The 95% prediction interval estimate is (Round to two decimal places as needed.)
You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 296 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.10. a. Complete the rest of the table by filling in the expected frequencies: Frequency of Cars in Each Lane Outcome Frequency Expected Frequency Lane 1 73 Lane 2 63 Lane 3 Lane 4 85 75 b. What is the correct statistical test to use? Select an answer c. What are the null and alternative hypotheses? Ho: O The traffic and lanes are dependent. O The traffic and lanes are independent. O The distribution of traffic is not uniform. OThe distribution of traffic is uniform. H₁: O The traffic and lanes are dependent. O The distribution of traffic is not uniform. O The distribution of traffic is uniform. O The traffic and lanes are independent. d. The degrees of freedom = e. The test-statistic for this data = (Please show your answer to three decimal places.)
A researcher selects a sample of 6 men and 11 women. She asks participants to rate the likelihood they would do female-stereotyped jobs (such as nursing or school teaching) on a scale from 1 = not likely at all to 5 = very likely. Men indicated that they would be less likely to do these jobs (M = 2.1) compared with women (M = 4.3). What is the weighted mean for the combined sample of 17 total participants? O O 2.1 4.3 3.2 3.5
Suppose that a simulation is constructed to estimate the mean response time, in milliseconds, of an interactive computer system. A number of repetitions are performed with the following results (measured in milliseconds): 4.1, 3.6, 3.1, 4.5, 3.8, 2.9, 3.4, 3.3, 2.8, 4.5, 4.9, 5.3, 1.9, 3.7, 3.2, 4.1, 5.1. Calculate the sample mean and variance of these results and hence derive a 95% confidence interval for the mean response time
The results: A. Are, or B. Are not significantly: A. High, or B. Low so there: A. is, or B. is not
You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 296 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.10. a. Complete the rest of the table by filling in the expected frequencies: Frequency of Cars in Each Lane Outcome Frequency Expected Frequency Lane 1 73 Lane 2 59 Lane 3 79 Lane 4 85 b. What is the correct statistical test to use? Select an answer < c. What are the null and alternative hypotheses? Ho: The traffic and lanes are independent. The distribution of traffic is not uniform. The distribution of traffic is uniform. The traffic and lanes are dependent. H1: The traffic and lanes are independent. O The distribution of traffic is uniform. The distribution of traffic is not uniform. The traffic and lanes are dependent.
find the z score in which 93.70% of the z scores in a population are below that value
To test for any significant difference in the number of hours between breakdowns for four machines, the following data were obtained. Machine1 Machine2 Machine3 Machine4 6.7 8.7 11.1 9.8 8.0 7.5 10.3 12.9 5.4 9.5 9.6 12.1 7.6 10.1 10.2 10.9 8.6 9.2 9.0 11.3 7.5 9.6 8.6 11.4 Use the Bonferroni adjustment to test for a significant difference between all pairs of means. Assume that a maximum overall experimentwise error rate of 0.05 is desired. Find the value of LSD. (Round your comparisonwise error rate to three decimal places. Round your answer to two decimal places.) LSD = Find the pairwise absolute difference between sample means for each pair of machines. x1 − x2= x1 − x3= x1 − x4= x2 − x3= x2 − x4= x3 − x4= Which treatment means differ significantly? (Select all that apply.) There is a significant difference between the means for Machine 1 and Machine 2.There is a significant difference between the means for Machine 1 and Machine 3.There is a significant…
You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 372 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.01. a. Complete the rest of the table by filling in the expected frequencies: of Cars in Each Lane Frequency Outcome Frequency Expected Frequency Lane 1 89 Lane 2 98 Lane 3 92 Lane 4 93 b. What is the correct statistical test to use? Select an answer Y C. What are the null and alternative hypotheses? Ho: OThe distribution of traffic is not uniform. O The traffic and lanes are independent. O The distribution of traffic is uniform. KO The traffic and lanes are dependent. Hi : OThe distribution of traffic is uniform. OThe traffic and lanes are independent. O The traffic and lanes are dependent. O The distribution of traffic is not uniform.

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