The figure below shows the distribution of the test Student's t statistic with 50degrees of freedom (solid line) and with 5 degrees of freedom (dashed line). Which oneof the following is FALSE about tests using these distributions?0.40.3probability density0.20.10.0-20t-statistic24Bothcurves differ from the standard normal distributionFor a given extreme value, the 50-d.f. t distribution will reject the null hypothesisless often than the 5-d.f. t distribution.The area under the curve between -2 and 2 differs between the two curvesThe mean of the two distributions is identical despite the different degrees offreedom

The objective is to interpret the t-distributions with the considered degrees of freedom of 50 and…

Answered: The figure below shows the distribution…

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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be here 1 " An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 120 lb and 171 lb. The new population of pilots has normally distributed weights with a mean of 128 lb and a standard deviation of 26.4 lb. 1 Click here to view page 1 of the standard normal distribution. Click here to view page 2 of the standard normal distribution. ? O a. If a pilot is randomly selected, find the probability that his weight is between 120 lb and 171 lb. The probability is approximately. (Round to four decimal places as needed.) b. If 32 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 171 lb. The probability is approximately. (Round to four decimal places as needed.) c. When redesigning the ejection seat, which probability is more relevant? A OA. Part (a) because the seat performance for a single pilot is more important. OB. Part (b) because the seat performance for a sample of pilots…
The daily high temperature for the month of August in Chicago is normally distributed with a mean of 70 degrees and a standard deviation of 5 degrees. QUESTION 1 What is the probability that a randomly selected August day in Chicago will have a high temperature below 85 degrees? Use the given normal distribution curve below to help you label and shade the correct picture for this problem. O A. 0.9987 О в. 0.0013 OC.0.4987 O D. 0.0087 Save All Answers Save and Submit Click Save and Submit to saue and submit. Click Save All Answers to save all answers. 6:35 PM e Type here to search 11/30/202 10/05/17 F1 F2 F3 F4 F5 F6 F7 F8 PrtSc Insert Delete F9 F10 F11 F12 C@ & 3 5 6 7 080 9- Backspace Num Lock T Y U 1 PI 00 Home + II S4 LI 2
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at Recall that to test a proportion, p, assuming all requirements are met, the z values will be calculated using the following formula, where r is the number of successes, n is the number of trials, p = - is the sample statistic, p is the population probability of %3D success, and q = 1 - p represents the population probability of failure. р - р z = pq In order to use the normal distribution to estimate the p distribution, the number of trials n should be sufficiently large so that both np > 5 and ng > 5. We will first check that these requirements are met. We have a random sample of 20 binomial trials resulting in 9 successes and we wish to test the claim that the population proportion of successes does not equal 0.50 using a significance level of 0.05. Therefore, we can define n, p, and q as follows. n = 20 20 p = 0.50 0.50 q = 1 - p = 0.50 0.50 Step 2 Now calculate np and ng for n = 20, p = 0.50, and q = 0.50. np = X (0.50) ng = 200 We conclude that since ---Select--- p…
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An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing Click here to view page 1 of the standard normal distribution. Click here to view page 2 of the standard normal distribution. Previous question a. If a pilot is randomly selected, find the probability that his weight is between 150 lb and 211 lb. The probability is approximately (Round to four decimal places as needed.) selected, find the probability that their mean weight is between 150 lb and 211 lb. b. If 36 different pilots are randomly The probability is approximately (Round to four decimal places as needed.) c. When redesigning the ejection seat, which probability is more relevant? A. Part (a) because the seat performance for a single pilot is more important. B. Part (b) because the seat performance for a single pilot is more important. C. Part (b) because the seat performance for a sample of pilots is more important. D. Part (a) because the seat performance for a sample…
. Patients at the outpatient surgical center in Braintree, MA have an average recovery time of 14 days with a standard deviation of 3 Assuming these raw scores form a normal distribution What is the probability of getting a raw score between 13 and 15?
Scores that occur in the extremes of the normal curve: Group of answer choices should be excluded from the normal curve indicate skew in the normal curve. are closest to the mode than scores toward the center of the distribution. have a very small probability of occurring.
When can a binomial distribution typically be approximated by a normal distribution? Which of these could work? The sample size being around 30, np and nq both being less than 5, np and nq both being greater than 5, or nx being more than 30?
Answer D please
The average score for games played in the NFL is 20.9 and the standard deviation is 9.1 points. 15 games are randomly selected. Round all answers to 4 decimal places where possible and assume a normal distribution. Q1 for the x¯ distribution =
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