nheducation.com/ext/map/index.html?_con%3Dcon&external_browser%3D0&launchUrl=https%253A%252F%252Fnewconnect.mheducation.com%252F#/activity/questio.am iSavedHelpSave & ExitThe discrete random variable X is the number of students that show up for Professor Smith's office hours on Monday afternoons. The tablebelow shows the probability distribution for X. What is the expected value EX) for this distribution?0.2.TotalP(X).40.30.20.10.1.00Multiple Choice1.21.01.5< Prev16. of 19Next >o 耳曲@to search45°F Rain showers

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Answered: The discrete random variable X is the…

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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• Let X be the number of games that a soccer team wins in a tournamer distribution of X is given by the table 1 4. P(x) 0.3 0.28 0.22 0.1 0.03 0.07 The probability that the number of games won by the soccer team is less than 2 or more than 4 equals A. 0.78 B. 0.22 C. 0.65 D. 0.35
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The frequency distribution shown here illustrates the number of medical tests conducted on 37 randomly selected emergency patients. Number of tests performed Number of patients 12 1 2 2 3 5 4 or more 9 Send data to Excel If a patient is selected at random, find the probability for the following. Enter your answers as fractions or as decimals rounded to 3 decimal places. Part: 0/ 3 Part 1 of 3 P(patient has had exactly 2 tests done)
CLT for Proportions The proportion of taxpayers who file within 45 days of the tax season is 36.4%. 1. What is the proportion of taxpayers that file after 45 days? 2. If you randomly select 60 taxpayers, what is the probability that at least 40% file within 45 days? 3. If you randomly select 115 taxpayers, what is the probability that at most 35% file within 45 days? 4. If you randomly select 140 taxpayers, what is the probability that between 36% and 39% file within 45 days? 5. Describe this distribution (sample proportion) in statistical notation when n=90
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A study of bone density on 5 random women at a hospital produced the following results. Age 41 45 49 69 73Bone Density 360 350 345 335 330 Step 3 of 3: Calculate the coefficient of determination, r2. Round your answer to three decimal places.
Does the following table represent the probability distribution for a discrete random variable? Explain your answer.
(3)A university claims that the average tertiary entry (TE) score of applicants to its business studies program has increased during the past three years. Three years ago, the mean and the standard deviation of TE scores of the university's business studies program applicants were 920 and 20, respectively. In a sample of 36 of this year's applicants for the program, the mean TE score was 925. At the 5% level of significance, can we conclude that the university's claim is true? (Assume that the standard deviation is unchanged.)
1 point The following table shows 120 patients classified according to their blood sugar levels and gender. A patient is selected at random from the 120 patients. The probability that the patient selected is a female and has a high blood sugar level is: Gender Male (M) Female (F ) Blood sugar level Low (L) Normal (N) High ( H) 40 20 30 10 15 0.208 0.375 0.125 0.6
High school students in Michigan sometimes get "snow days" in the winter when the roads are so bad that school is canceled for the day. Define the random variableX = the number of snow days at a certain high school in Michigan for a randomly selected school year. Suppose the table below gives the probability distribution of X. 1. Value x, 1. 3 4 5 6 7 8 9 10 Probability p, ? 0.19 0.14 0.10 0.07 0.05 0.04 0.04 0.02 0.01 0.01 (a) Write the event “the school year has O snow days" in terms of X. Then find its probability. (b) At this high school, if more than 5 snow days are used over the course of the year, students are required to make up the time at the end of the school year. What's the probability that a randomly selected school year will require make-up days?
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The discrete random variable X is the number of students that show up for Professor Smith's office hours on Monday afternoons. The table • below shows the probability distribution for X. What the expected value EX) for this distribution? 3 Total P(X) .40 .30 .20 .10. 1.00 Multiple Choice