1. A student is taking a 40 question multiple choice exam each with 3 answer choices. If a student is just guessing at allthe answers, find the following probabilities:a. He gets less than 10 correctb. He gets at least 30 correctc. He gets more than 10 but at most 15 correctd. The first question he is correct on is the 4th question2. A midterm is normally distributed and has a mean of 80 and a standard deviation of 6 points. What is the minimumgrade needed for the following situationsa. Pass the class if the bottom 8 percent failb. Get an 'A' if the top 10 percent get an 'A'd. Find Q1, Q3, and IQRc. Find the probability that someone gets at least a 90?3. A researcher computed the least-squares regression line of ŷ = 18 - 2.1x where ŷ= the value of a car (in thousands)and x is the number of years since 2010.a. Interpret the slopeb. What is the predicted value of a car in 2013c. Interpret the y-intercept d. Suppose the value of the car in 2015 is $10,000. Calculate the residual.4. Probability of event C is 0.25. Probability of event D is .35. Probability of event C or event D is .4.a. Find the probability of event C and event D both occurring b. Find the probability of C given D occurringc. Find the probability of (Cn D) occurring. d. Find the probability of (C n D²) occurringe. Suppose that C and D are independent. Find the probability of C or D happening.5a. Which way is the data skewed?b. What is the range?c. What is the Interquartile range?d. Assuming there are 200 people, how many people are at least 12 yearsold?

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Answered: 1. A student is taking a 40 question…

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 student must take a multiple-choice exam with only oneanswer, the exam consists of 20 questions with 4 answer options eachOne, suppose the student does not prepare for the test and answers therandom.a. Find the probability that the student will win the test.B. How many questions are you expected to answer to get the fifthcorrect answer.
Question 11: Find the probability that at least one of them gets off on the 5th floor. O .271 O .3 O .336
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