Suppose you have an experiment where you draw three cards (with replacement) from a standard deck of 52cards. You then count the number of aces drawn. Use this experiment to address each of the followingquestions. Round solutions to four decimal places, if necessary.The mean of a discrete probability distribution is also notated by Select an answer CWhich of the following is the correct interpretation of the mean?Select an answere) Find the standard deviation for the number of aces drawn when three cards are randomly selected.σ=f) Find the probability of drawing two or less aces.P(two or less aces)

Given: p=452n=3 Concept used: The probability can be defined as the ratio of the number of the…

Answered: Suppose you have an experiment where…

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 guess repeatedly on an exam that is made up of multiple choice questions, all of which have 5 possible answers. There are 22 problems on the exam. If needed, round your answers below to three decimals. a. To model this situation with a binomial distribution, what would you use for p? b. How many questions would you expect to get right? C. What is the variance? d. What is the probability of getting 4 questions right? Submit Question
In the month of July, the average electrical Eversource bill in Amherst Massachusetts is $72 with a standard deviation of $6. Suppose that the electrical bills are normally distributed, what is the probability that the average electrical bill in Amherst for 15 residents is less than $75? Select one: A. 78.45% B. 23.27% C. 97.38% D. 31.21%
When will I see the credit? In a random sample of 170 customers, 90 ordered chicken sandwitches for lunch. In a recent study reported Sept. 21, 1952 on the Flurry Blog, the mean age of tablet users is 34 years. Suppose the standard deviation is 15 years. Take a sample of n = 100. Find the probability that at least 150 favor a charter school.
A professor knows that her statistics students' final exam scores have a mean of 80 and a standard deviation of 12.2. In her class, an "A" is any exam score of 90 or higher. This quarter she has 25 students in her class. What is the probability that 7 students or more will score an "A" on the final exam?Hint: You will need to use your knowledge of normal probability distributions to determine the probability of one individual getting an A and then use your knowledge of binomial distributions to determine the probability of 7 students or more out of 25 students getting an A.prob = ____________Report your final answer accurate to 4 decimal places. Do not round any of the numbers in this calculation until the very end of the problem!
The figure below represents the data from Table 3.6 in the book. It summarizes the lengths of hospital stays (days) for a sample 25 patients. Duration of hospitalization (days) 6. 1. 01-05 06-10 11-15 16-20 >20 What is the probability that someone stayed in the hospital at most 10 days? None of these choices are correct.
Question 43 The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5 days and standard deviation of 2.1 days. Use Onlinestatbook or GeoGebra to find the following probabilities. Write your answers in percent form. Round your percentages to two decimal places. a) What is the probability of spending less than 7 days in recovery? b) What is the probability of spending more than 5 days in recovery? c) What is the probability of spending between 5 days and 7 days in recovery? Question Help: D Post to forum Submit Question
A customer service center is tracking number of complaints in each week. Let X be the number of complaints in each week. The probability distribution of X is summarized as below. X 0 1 2 3 Probability 0.4 ? 0.15 0.05 Can we be certain that the standard deviation of X is less than 3?
Complete the following probability distribution table: X -13 11 28 45 66 80 P(X) 0.13 0.12 0.18 0.15 0.22
A sociologist randomly selects single adults for different groups of three, and the random variable x is the number in the group who say that the most fun way to flirt is in person. Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied, P(x) O 0.086 0.326 0.414 0.174 Does the table show a probability distribution? Select all that apply. O A. Yes, the table shows a probability distribution. O B. No, the sum of all the probabilities is not equal to 1. O C. No, the random variable x's number values are not associated with probabilities. O D. No, the random variable x is categorical instead of numerical. O E. No, not every probability is between 0 and 1 inclusive.
Of all the students, 44% own an iPhone, with a standard deviation of .03 For that same sample of 400 students, what is the probability that at least 42% of them own an iPhone?
According to a certain website, the average daily time spent on social networking by internet users worldwide is 145 minutes. Assume the standard deviation is 45 minutes and that the probability distribution is normal. What is the probability that a randomly selected person spends daily at least 3 hours on social networking? Select one: a. 0.7794 O b. 0.2206 c. 0.7823 O d. 0.2177

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