Check My Work (2 remaining)еBookA shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executiveoffice (CEO) was at least eleven years. A survey of companies reported in the Wall StreetJournal found a sample mean tenure of 9.93 years for CEOS with a standard deviation ofS6.56 yearsa. Formulate hypotheses that can be used to challenge the validity of the claim made by theshareholders' groupНо : р511Ha>11b. Assume 80 companies were included in the sample. What is the p-value for yourhypothesis test? Enter negative value as negative number.t-value(to 3 decimals)p-valueSelect your answer-c. At a 0.02, what is your conclusion?the null hypothesis. We don't haveenoughDo not rejectevidence to disprove the shareholder group's claim

It is given that the sample mean is 9.93 years and the sample standard deviation is 6.56years.The…

Answered: Check My Work (2 remaining) еBook 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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Is there any systematic tendency for part-time college faculty to hold their students to different standards than do full-time faculty? An article reported that for a sample of 125 courses taught by full-time faculty, the mean course GPA was 2.7186 and the standard deviation was 0.67342, whereas for a sample of 88 courses taught by part-timers, the mean and standard deviation were 2.8639 and 0.53241, respectively. Does it appear that true average course GPA for part-time faculty differs from that for faculty teaching full-time? Test the appropriate hypotheses at significance level 0.01. State the relevant hypotheses. H0: ?full-time − ?part-time = 0Ha: ?full-time − ?part-time < 0H0: ?full-time − ?part-time = 0Ha: ?full-time − ?part-time ≠ 0 H0: ?full-time − ?part-time = 0Ha: ?full-time − ?part-time > 0H0: ?full-time − ?part-time = 0Ha: ?full-time − ?part-time ≥ 0H0: ?full-time − ?part-time = 0Ha: ?full-time − ?part-time ≤ 0 Calculate the test statistic and P-value. (Round…
Cranberry syrup is packaged using two production lines. A sample of 5 packs from the first line has a mean of 1.2 quarts with a standard deviation of O.02 quarts. A sample of 6 packs from the second line has a mean of 1.15 quarts with a standard deviation of 0.01 quarts. What is the value of the test statistic? * О 4 0.05 O 2 0.01
10. A student from region A scored 400 on standardized math test with a mean of 350 and a standard deviation of 35. A student from region B scored 67 on a standardized math test with a mean of 62 and a standard deviation of 5. Both are being considered for a scholarship at the same university. a) How can the university decide which candidate is the better student?
You may need to use the appropriate technology to answer this question. A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive office (CEO) was at least nine years. A survey of companies reported in The Wall Street Journal found a sample mean tenure of x7.27 years for CEOs with a standard deviation of s- 6.38 years. (a) Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. H29 (b) Assume 90 companies were included in the sample. What is the test statistic? (Round your answer to three decimal places.) 1356 x What is the p-value for your hypothesis test? (Round your answer to four decimal places.) p-value - 242 x (c) At a- 0.01, what is your conclusion? O Reject H We can conclude that the mean tenure of a CEO is significantly lower than 9 years. The claim of the shareholders group is not valid. O Do not reject Hg. We cannot conclude that the mean tenure of a CEO is significantly lower than 9…
A study of the wages of 100 persons grouped in class-intervals of Dollar 10-12, 12 14 ... etc. revealed the mean wage to dollar. 32.02 and its standard deviation as dollar. 13.18. Later, it was discovered that the wage of a labourer who was getting Dollar 57 was misread as 27. Calculate the correct mean and standard deviation?
9
The length of human pregnancies is nearly unimodal and symmetric, with mean ? = 266 days and a standard deviation of ? = 16 days. a. A "very preterm baby is one whos gestation period is less than 224 days. Are very preterm babies unusual?
4.) The USEP Admission Scholarship Examination scores of a sample of 9 students who joined the university during the second semester of SY 2021-2022 were found to be 67, 92, 90, 79, 69, 62, 59, 69, and 95. Compute the standard deviation.
11- A production manager claims that when a machine set properly, it produces metal bars having a mean length of exactly 2 meters, with a standard deviation of 0.20 meter. For a sample of 30 bars, the mean length is 2.10 meters. To test the managers’ claim, you will use Z -test. Select one: True False
After sitting in the waiting room for 12 minutes, a patient begins to complain. Is this patient’s wait time unusual?
28. A recent study by The Fresno Bee showed that 4% of Fresnans have a commute time (the time it takes to get to work) of more than 22 minutes. If the standard deviation of commute times is 3.5 minutes, what is the mean of all commute times?

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