Question 4Suppose an electric-vehicle manufacturing company estimates that a driver who commutes 50 miles per day ina particular vehicle has a recharging time that has a uniformly distributed between 80 and 110 minutes.What is the expected recharging time in minutes?(Enter your answer with no decimal places)

Answered: Image /qna-images/answer/cca4ccf7-7abe-4c61-bff4-855dacb7d558.jpg

Answered: Suppose an electric-vehicle…

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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A sample of n=8 scores has a mean of M=12. If one person with a score of X=9 is removed from the sample, what will be the value for the new mean? Be sure to show all formulas with symbols (and plug in numbers), steps, processes and calculations for all parts of all answers.
A waiting line meeting the assumptions of M/M/1 has an average time between arrivals of 10 minutes, and it services items on an average of 5 minutes each. What is the utilization factor? 0.25 0.33 0.50 0.67 1.50
A sample of 100 stoaches are fed with pellets of food. For each stoach, the experimenters recorethe number of pellets eatenSome sample statistics for the numbers of pellets eaten follow:N 100x 60.95s 6.99min 46Q1 56.76median 59.87Q3 63.61max 76State the IQR, to 2 decimal places.
d E 80 F3 Page < 2 of 2 2. Although the Occupational Safety and Health Act (OSHA) is not very popular with management because it is expensive to implement, some sources claim that it has been effective in reducing industrial accidents. The following data were collected on lost-time accidents both before and after OSHA came into effect (the figures given are mean man-hours lost per month over a one year period) at six different industrial plants: Plant 1 2 3 4 5 6 38 64 42 70 58 30 Before OSHA After OSHA 31 58 43 65 52 29 Difference (B-A) a. A test is to be performed to see if OSHA has been effective in reducing the industrial accidents. Differences are calculated as "Before - After". Enter those differences in the table. b. What was the average reduction in man-hours lost per month in the sample? c. The population of differences has a normal distribution. The sample standard deviation equals 3.225 hours. Test the claim that OSHA has been effective in reducing the average number of…
Q5. Borer et al. [1980], study 45 individuals after an acute myocardial infarction (heart attack). They measure the ejection fraction (EF); the EF is the percent of the blood pumped from the left ventricle (the pumping chamber of the heart) during a heart beat. A low EF indicates damaged or dead heart muscle (myocardium). During follow-up four patients died. Dividing EF into low ( 35% 4. 9. 0. 32 Is there reason to suspect, at a 0.05 significance level, that death is more likely in the low EF group? Use a one-sided p-value for your answer, since biological plausibility (and prior literature) indicates low EF is a risk factor for mortality.
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A popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights (in centimeters) of randomly selected presidents along with the heights of their main opponents. Complete parts (a) and (b) below. Height (cm) of President 185 170 179 191 194 179 9 Height (cm) of Main Opponent 170 184 174 166 194 182 Identify the test statistic. t= 0.57 (Round to two decimal places as needed.) Identify the P-value P-value = 0.286 (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? Since the P-value is greater than the significance level, fail to reject the null hypothesis. There is not sufficient evidence to support the claim that presidents tend to be taller than their opponents. b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in part (a)? The confidence interval…
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