A general practitioner doctor is interested in knowing how many years her patients stay withher. Let X be the number of years a patient will stay with the doctor. Over the years, she hasestablished the following probability distribution:12345P(X=r)0.170.170.170.33Find the probability that X is exactly 4 years.Answer:

Random Variable: In probability theory, a random variable is a variable whose values depend on…

Answered: A general practitioner doctor is…

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 number of inches of rain that fell during the month of April was recorded over time. The number of years the total fell in each category is recorded below. Fill in a probability distribution for this data in the third line of this chart. a. inches of rain x<1 1<x<2 2<x<3 3<x<4 x>4 number of years 4 13 21 10 2 probability ? ? ? ? ? b. What is the probability that the number of inches of rain for April is less than 2 inches? c. What is the probability that the number of inches of rain for April is 3 or more inches?
A researcher was interested in comparing the resting pulse rates of people who exercise regularly and of those who do not exercise regularly. Independent simple random samples of 16 people who do not exercise regularly and 12 people who do exercise regularly were selected and the resting pulse rates (in beats per minute) were recorded. Test the claim that the mean resting pulse rate of people who exercise regularly is larger than the mean resting pulse rate of people who do not exercise regularly. How many populations? 01 What is the parameter? O Variance O standard Deviation O Proportion O Difference between Means O Mean
Every day at lunch, the Subway sandwich shop will use between zero and three gallons of guacamole. Historical data tells us that any amount of guacamole, up to the maximum of three gallons, is equally likely. a. If Subway makes $30 per gallon of guacamole sold, how much money from lunchtime guacamole sales does Subway make on average? b. What is the probability that Subway makes between $52 and $ 76 dollars in lunchtime guacamole sales on any given day? c. What is the probability that Subway sells between two and four gallons of guacamole on a given day?
In a snooker tournament, the fifirst player that wins 5 out of 9 games wins. Suppose that the probability that Steve Davis beats Ding Junhui in one game is 0.45. Find the probability that Steve wins at the 7th game 3.77% B. 4.07% C. 0.37% D. 2.14%
Maggie is practicing her penalty kicks for her upcoming soccer game. During the practice, she attempts 10 penalty kicks. If each attempt at the penalty kick is independent of the other attempts and if she scores 65% of the time, historically, what is the probability that she scores at least eight goals? Give your answer as a percentage precise to two decimal places. %
Suppose that John Q. Basketballplayer has made 8.9% of his previous free throw attempts. What is the probability that in his next 28 attempts, he makes more than two of his shots
Which of the following CANNOT be a probability value? a. 0.26 b. -0.97 c. 0.03 d. 1.0
Meals are often served at a conference. At one conference: 50% went to breakfast 73% went to dinner 37% attended both breakfast and dinner. If someone attended breakfast, what's the probability they attended dinner? Round your answer to two decimal places.
The lifetime of a light bulb is normally distributed with an average life of 500 hours and a standard deviation of 100 hours. If a company installs 5000 of these light bulbs, find the number of bulbs that can be expected to last between 500 hours and 675 hours.
Tyee recorded the grade-level and instrument of everyone in the middle school School of Rock below. Seventh Grade Students Instrument # of Students Guitar 3 Bass 8 Drums 9 Keyboard 8 Eighth Grade Students Instrument # of Students Guitar 3 Bass 14 Drums 5 Keyboard 4 Based on these results, express the probability that a seventh grader chosen at random will play an instrument other than guitar as a decimal to the nearest hundredth.
Assume that the average number of phone calls coming at a small corporation's switchboard is 30 per hour. What is the probability of receiving more than five calls in a 5-minute period? a. 0.958 b. 0.042 c. 0.100 d. none of the preceding
The table below shows the results of a survey about a junk food tax. Support Oppose Unsure Male 126 360 18 Female 223 300 38 A person is selected at random from the sample. What is the probability that the person supports or opposes the tax? Your answer should be a decimal (not a percent) correct to three decimal places.

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