Question 5For air travelers, one of the biggest complaints is of the waiting time between when the airplanetaxis away from the terminal until the flight takes off. This waiting time is known to have a right-skewed distribution with a mean of 10 minutes and a standard deviation of 7 minutes. Suppose100 flights have been randomly sampled. Describe the sampling distribution of the mean waitingtime between when the airplane taxis away from the terminal until the flight takes off for these100 flights.O A. Distribution is approximately normal with mean = 10 minutes and standard error = 0.8 minutes.O B. Distribution is approximately normal with mean = 10 minutes and standard error = 8 minutes.O C. Distribution is approximately normal with mean = 10 minutes and standard error = 7 minutes.D. Distribution is approximately normal with mean = 10 minutes and standard error = 0.7 minutes.Question 6A sample of 25 circuits from a large normal population has a mean resistance of 3 ohms. We knowfrom past testing that the population standard deviation is 1 ohm. Determine a 90% confidenceinterval for the true mean resistance of the population. What is the lower bound?3.3292.6713.876O 2.876

NOTE: As per the guidelines, we are supposed to solve the first and one question at a time. Please…

Answered: r air travelers, one of the biggest…

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 amount of coffee that people drink per day is normally distributed with a mean of 17 ounces and a standard deviation of 6 ounces. 11 randomly selected people are surveyed. Round all answers to 4 decimal places where possible.
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A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with H = 525. The teacher obtains a random sample of 2200 students, puts them through the review class, and finds that the mean math score of the 2200 students is 530 with a standard deviation of 119. Complete parts (a) through (d) below. C. Yes, because every increase in score is practically significant. D. No, because the score became only 0.95% greater. (d) Test the hypothesis at the a = 0.10 level of significance with n= 400 students. Assume that the sample mean is still 530 and the sample standard deviation is still 119. Is a sample mean of 530 significantly more than 525? Conduct a hypothesis test using the P-value approach. Find the test statistic. to =0 (Round to two decimal places as needed.) %3D Find the P-value. The P-value is (Round to three decimal…
The mean # of hours worked
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refer to image below
Do rats take the same amount of time on average than hamsters to travel through a maze? The table below shows the times in seconds that the rats and hamsters took. Rats: 31, 26, 35, 34, 31, 39, 39, 6 Hamsters: 36, 35, 16, 29, 20, 25, 28, 37 Assume that both populations follow a normal distribution. What can be concluded at the a = 0.05 level of significance level of significance? For this studv, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer v Select an answer V (please enter a decimal) H1: Select an answer v Select an answer v v (Please enter a decimal) Select an answer b. The test statistic ?v= (please show your answer to 3 decimal places.) c. The p-value = (Please show your answer to 4 decimal places.) d. The p-value is ? va e. Based on this, we should Select an answer v the null hypothesis. f. Thus, the final conclusion is that ... O The results are statistically insignificant at a = 0.05, so there is…
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