A man who moves to a new city sees that there are two routes he could take to work. A neighbor who has lived therea long time tells him Route A will average 5 minutes faster than Route B. The man decides to experiment. Each dayhe flips a coin to determine which way to go, driving each route 20 days. He finds that Route A takes an average of43 minutes, with standard deviation 3 minutes, and Route B takes an average of 48 minutes, with standard deviation1 minute. Histograms of travel times for the routes are roughly symmetric and show no outliers. Complete parts a andb....a) Find a 95% confidence interval for the difference between the Route B and Route A commuting times, (HB-HA).The confidence interval is (.).(Round to two decimal places as needed.)

Answered: A man who moves to a new city sees that…

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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You are a paranoid delusional statistician with far too much time on your hands. One day, you sit down to have a bowl of soup. This bowl of soup happens to be Tic-Tac-Toe themed, meaning that you stir have some noodles that are shaped like an X, and some that are shaped like an O. As your soup, you notice that this bowl seems to have a particularly high number of X- you shaped noodles in it. Being paranoid, you conclude that this has some meaning-like someone is trying to give you a message, possibly warning you of the dangers of x-rays. You jump out of your seat and run to get your x-ray-proof cape, and then you pause for a moment and think that you should calculate a chi-square statistic for the frequency of X-shaped noodles before freaking out. First, you carefully separate each of the noodles by shape and count them. Here is what you find: Frequency of Noodles X-shaped O-shaped 33 21 1. What type of chi-square design is this (check one box)? OTwo-cell ОThree-cell OTwo-by-two…
Which histogram belongs to the data for the current golf balls –Figure 3 or Figure 4? Give a reason for your answer.
This my third time posting the same question. Because no one answer it straight to me. I already answered the question. Could you please tell me which one of these are not correct. and if so Could you please tell me the correct answer first then explain it. Also could you please highlight the correct answer for each one
I would like help with question 2 both A and B.
A California lake has been stocked with rainbow trout. These trout have an average length of 24 inches, with a standard deviation of 3 inches. Someone goes fishing and catches a trout that is 26.25 inches long. Express the length of this trout in standard units, relative to all the trout that were used to stock the lake. Choose the answer below that is closest.
PLEASE DONT USE EXCEL AND SHOW STEP BY STEP SOLUTION
What is the predicted height for a child born to a mother with a height of 67 inches and a father with a height of 71 inches?
estion 10 of 13 0/2.7 E A colonoscopy is a screening test for colon cancer, recommended as a routine test for adults over age 50. One study provides the best evidence yet that this test saves lives. The proportion of people with colon polyps expected to die from colon cancer is 0.01. A sample of 2602 people who had polyps removed during a colonoscopy were followed for 20 years, and 12 of them died from colon cancer. Does this provide evidence that the proportion of people who die from colon cancer after having polyps removed in a colonoscopy is significantly less than the expected proportion (without a colonoscopy) of 0.01? 1Zauber, et.al., "Colonoscopic Polypectomy and Long-Term Prevention of Colorectal-Cancer Deaths," New England Journal of Medicine, 2012; 366: 687-696. X Your answer is incorrect. (a) What are the null and alternative hypotheses? Edit : Pi : P2 : 0.01 d :: : 11 : 12 : P1 : P2 | P2 | vs Ha: Pi | Ho: P1 P2 Type here to search hp V .. ..
According to the Pew Research Center, 14% of adults rate basketball as their favorite sport. Your boss believes the proportion may be lower among adults over age 65, and wants you to collect evidence to see if this is true. You take a survey of adults over age 65, and only 12 out of 120 of them rate basketball as their favorite sport. You would like to set �=0.05. Your boss tells you that your firm will base some expensive decisions on the results of your hypothesis test, so a higher standard of evidence for rejecting the null hypothesis is needed. What should you do? Group of answer choices Keep the significance level the same but collect more data Increase the significance level to 10% Reduce the significance level to 1% Throw out observations that look suspicious thanks
Note: Please solve within 35 minutes. The proper explanation is a must. Saide scored 85 on a Bilogy test had a mean of 77 and a standard deviation of 5, and she scored 72 on a physics test that had a mean of 65 and a standard deiviation of 3. Suppose both distriburions are normal. a. Mich also took the same physics test and his score was higher that 31% of the class. What was Mitchs score? b. What is the probability that a random sample of 4 students would have a mean score on the psychics test above 63?(Please show work)
The following data was collected from a clinical trial testing a new drug aimed to lower blood pressure for individuals older than age 45. Half of the 20 participants received the new drug (Treatment = Yes) and the other half of the participants received a placebo pill (Treatment = No). Their age and gender was also recorded. Please use this data for Questions 17-19 and 20-24 and note, not all the information in the table will be used for either problem, you must decide what is relevant based on what the problem is asking. Subject ID Treatment Age Gender BP_Before BP_After D1 Yes 65 F 103.3 80.5 D2 Yes 59 F 93.6 85.9 D3 Yes 60 M 92 85.2 D4 Yes 54 F 93 87.8 D5 Yes 65 F 95.4 85.3 D6 Yes 57 M 109.6 94.2 D7 Yes 69 M 97.9 83.9 D8 Yes 62 M 96 85 D9 Yes 49 F 98.4 86.3 D10 Yes 45 M 98.4 90 C1 No 63 F 97.4 93.1 C2 No 56…
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