For any problem where you use a preprogrammed TI function, you must writedown which function you use (complete name, not just something like "normal"because there are multiple normal functions), what values you enter (in order), andwhat the calculator produces. Round all probabilities to at least four decimalplaces.According to an article in the Journal of Anatomy (May, 2013), the ratio of thelength of a person's femur to the length of their tibia averages 1.23. Suppose thisratio is approximately normal with a mean of 1.23 and a standard deviation ofsigmab. What proportion of people have a ratio of b1 or more?sigma0.031b1c1c21.25 1.2187 1.266d190beta4.95e1f13.564 6.1875f214.058g125.7g270.9h133.47h258.06

The question is about continuous prob. distribution Given : Popl. mean of ration of length ( μ ) =…

Answered: For any problem where you use 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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Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.2. A sample of 37 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. Part 1 of 5 Is it appropriate to use the normal approximation to find the probability that more than 48% of the people in the sample have high blood pressure? It is not appropriate to use the normal curve, since np 7.4 V 10 and n (1 – p) = 29.6 |2 10. Part 2 of 5 A new sample of 82 adults is drawn. Find the probability that more than 32% of the people in this sample have high blood pressure. The probability that more than 32% of the people in this sample have high blood pressure is 0.0033
In a poll of 1500 adults in July 2010, 780 of those polled said that schools should ban sugary snacks and soft drinks. Complete parts a and b below. 1. Find the value of the test statistic z. z = _____ (Round to two decimal places as needed.) 2. Find the value of the corresponding p-value for this test statistic z. p-value = _____ (Round to three decimal places as needed.) 3. Do you reject or not reject the null hypothesis? 4. b. Choose the best interpretation of the results you obtained in part a.
Suppose that the length of long distance phone calls, measured in minutes, is known to have an exponential distribution with the average length of a call equal to $24 minutes. The 16th percentile is a phone call that lasts minutes.
What is the z-score of x = 3 if it is 2 standard deviation to the left of the mean? -3 -2 1 O 2 1.
Can you conclude that listening to music will decease the frequency of sleep attacks in narcoleptics at p=0.05?
A mean function E(Y IX = x) tells us: the probability of observing the value Y. O whether or not to reject the null hypothesis. how much data we need to collect. how the expected value of Y changes as X varies.
In the population you are studying (people who live alone), there are 40% of men and 60% of women. If you know that the mean number of take-out dinners in a month for men is 15.1, and that the overall mean number of take-out dinners per month (for the population) is 13.4, then what is the mean number of take-out dinners in a month for women? Enter your answer rounded to one decimal place.
A university conducted a study of online adults that included 411 tablet owners. The study found that 217 tablet owners use their tablet while watching TV. The authors of the report imply that the survey proves that more than half of all tablet owners use their tablet while watching TV at least once per day. Determine the p-value. The p-value is _______ (Round to four decimal places as needed.)
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 42 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. Part 1 of 6 Is it appropriate to use the normal approximation to find the probability that more than 51% of the people in the sample have high blood pressure? ▼appropriate to use the normal curve, since xp = 12.6 > po It is and (1-P) = 29.4 Part 2 of 6 Find the probability that more than 51% of the people in this sample have high blood pressure. The probability that more than 51% of the people in this sample have high blood pressure is 0.0015 Part 3 of 6 10. A new sample of 81 adults is drawn. Find the probability that more than 42% of the people in this sample have high blood pressure. The probability that more than 42% of the people in this sample have high blood pressure is 0.0092 Part: 3 / 6…
A paper investigated the driving behavior of teenagers by observing their vehicles as they left a high school parking lot and then again at a site approximately mile from the school. Assume that it is reasonable to regard the teen drivers in this study as representative of the population of teen drivers. Amount by Which Speed Limit Was Exceeded Female Driver -0.1 0.4 1.1 0.7 1.1 1.2 0.1 0.9 0.5 0.5 (a) Use a .01 level of significance for any hypothesis tests. Data consistent with summary quantities appearing in the paper are given in the table. The measurements represent the difference between the observed vehicle speed and the posted speed limit (in miles per hour) for a sample of male teenage drivers and a sample of female teenage drivers. (Use males - females: Round your test statistic to two decimal places. Round your degrees of freedom down to the nearest whole number. Round your p-value to three decimal places.) t= df = P = Male Driver 1.4 1.2 0.9 2.1 0.7 1.3 3 1.3 0.6 2.1 (b) Do…
Suppose a study of speeding violations and drivers who use cell phones produced the following fictional data: Speeding violation in thelast year No speeding violation in the last year Total Uses cell phone while driving 25 280 305 Does not use cell phone while driving 45 405 450 Total 70 685 755 Calculate P(Driver had no violation in the last year AND was a cell phone user). Round your answer to four decimal places.
A foundation conducted a survey of physicians' attitude about health care reform, calling the report "a survey of 100,000 physicians." The survey was sent to 100,000 randomly selected physicians practicing in the United States: 38,000 via post-office mail and 62,000 via email. A total of 2,474 completed surveys were received. What is the rate of nonresponse for this survey? (Round your answer to two decimal places.)

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