Toss five fair coins and let x equal the number of heads observed.a. Identify the sample points associated with this experiment, and assign a value of x to each sample point. Then list all the possible values of x.b. Calculate p(x) for the values x = 1 and x = 2.c. Construct a probability histogram for p(x).d. What is P(x = 1 or x = 4)?

Toss five fair coins and let x equal the number of heads observed.

Answered: Toss five fair coins and let x equal…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Answer the following,choose the letter of the correct answer.
Name: California State University, Fresno DS 123 Class Work #1 Problem I. Using the standard normal table, find the following probabilities: 1. 1. Find the amount of area to the right of z=2.18. %3D 2. 2. Find the probability of a z-score below z=-1.37. 3. 3. Find the area between a z of - 1.37 and az of 2.18. 4. 4. Find the area equal to or above a z of - 2.04. 5. 5. Find the area equal to or below a z of 1.26. Problem II. Assume x is normally distributed with a population mean u= 15 and population standard deviation o=3. Use the approximate areas beneath the normal curve to answer the following five questions. %3D 6. 6. Find P(x216). 1. 7. Find P(12
In a study, it was found that 42.5% of the population drink soda at least once a day. You randomly select 8 people. Let X be the number of people in the sample that drink soda at least once a day.Then X has what distribution?
Chp 4 pt 1 Toss five fair coins and let x equal the number of tails observed. a. Identify the sample points associated with this experiment, and assign a value of x to each sample point. Then list all the possible values of x. b. Calculate p(x) for the values x=1 and x=4. c. Construct a probability histogram for p(x). d. What is P(x=1 or x=5)?
Suppose you choose four people at random from a Statistics class in which you know 20% of the students have an A average. Let X be the number of students in your sample who have an A average. Obtain the probability distribution for X and plot the probability histogram. X Probability 0 i N 3 A 0.45 0.4 0.35 0.3 i Probability histogram: 0.25 i MI 0.2 0.15- 0.1 0.05- 0 0 1 2 X Figure 1. 3 0.45 0.4 0.35 0.3 0.25 m 10 el 02 0.15 0.1 0.05 0 0 2 X Figure 2. 3 0.45 0.4 0.35- 0.3- 0.25 02- 0.15 0.1- 0.05 0 0 1 2 X Figure 3. 3
The final exam grade distribution for all students in the introductory statistics class at a local community college is displayed in the table, with A = 4, B = 3, C = 2, D = 1, and F = 0. Let X represent the grade for a randomly selected student from the class.What is the standard deviation of the distribution?A) 1.16B) 1.08C) 1.41D) 2.98
11. Add 6 to each number in the dataset. Then, the 15th percentile is:a. 1b. 6c. 8d. 7Use the following information to answer questions 12-14: Suppose the probability that an adult gets thenews from Facebook is 0.60. A random sample of 14 adults were surveyed to determine X, the numberof adults who get their news from Facebook.12. Which of the following statements is false?a. The set of possible x-values is {1, 2, 3, . . ., 14}b. X ~ B (14, 0.60)c. P(X=5) = 0.0408d. µ = 8.413. Find the probability that at least 6 adults get their news from Facebook.a. 0.8499b. 6/14c. 0.6429d. 0.941714. X is of data of type:a. categorical nominalb. categorical ordinalc. numerical continuousd. numerical discrete15. Suppose that the ages of Brunswick CC students are normally distributed. A random sample of 6Brunswick CC students reported the ages of 20, 35, 18, 45, 27, and 20 years old. Find the errorbound that corresponds to the 90% confidence interval for the true population mean age ofBrunswick CC…
Construct a probability distribution of the random variable for each of the following situations. Write your answer on a piece of paper. 1. Two coins are tossed. Let T be the number of tails that occur. A. Construct the probability distribution for the random variable T. B. Construct the probability histogram. 2. Three coins are tossed. Let T be the number of tails that occur. A. Construct the probability distribution for the random variable T. B. Construct the probability histogram. 3. A coin was flipped four times. Let H be the number of heads that come out. A. Construct the probability distribution for the random variable H. B. Construct the probability histogram. 4. Two balanced dice are rolled. Let S be the random variable denoting the sum of the number of dots that will appear. A. Construct the probability distribution for the random variable T. B. Construct the probability histogram. And yung nasa image
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Let X = number of siblings. Use the following table to answer questions 3 and 4: x (p)x 0 2/40 1 5/40 2 0 3 14/40 4 7/40 5 4/40 3. Find the probability that a person has two siblings.a. 8/40b. 8c. 2d. 6/404. Find the expected number of siblings a person has.a. 2.78b. 15c. 3.13d. 1.0
According to Reader's Digest, 37% of primary care doctors think their patients receive unnecessary medical care. Use the z-table. a. Suppose a sample of 390 primary care doctors was taken. Show the sampling distribution of the proportion of the doctors who think their patients receive unnecessary medical care. E(p) .37 (to 2 decimals) .0227 (to 4 decimals) b. What is the probability that the sample proportion will be within ±0.03 of the population proportion? Round your answer to four decimals. c. What is the probability that the sample proportion will be within ±0.05 of the population proportion? Round your answer to four decimals. d. What would be the effect of taking a larger sample on the probabilities in parts (b) and (c)? Why? The probabilities would - Select your answer - This is because the increase in the sample size makes the standard error, o Select your answer -

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