The county highway department recorded the following probabilities for the number ol ac a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown. (Round your answers to three decimal places if needed.) Number of accidents, X 0 1 2 3 4 Probability P(X) 0.3 0.2 y 0.2 |0.1 a. Find y so that this is a valid probability distribution. b. Find the mean of this distribution using the value found for y in part a. c. Find the expected value of number of accidents per day. d. The variance and standard deviation of this distribution using the value found for y in part a are respectively, and

The county highway department recorded the following probabilities for the number ol ac a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown. (Round your answers to three decimal places if needed.) Number of accidents, X 0 1 2 3 4 Probability P(X) 0.3 0.2 y 0.2 |0.1 a. Find y so that this is a valid probability distribution. b. Find the mean of this distribution using the value found for y in part a. c. Find the expected value of number of accidents per day. d. The variance and standard deviation of this distribution using the value found for y in part a are respectively, and

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

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
Find the value of the following hypergeometric probability distribution. Leave the answer as a number rounded to the nearest ten-thousandths: ?(3)=(93)⋅(81)(174)f(3)=(93)⋅(81)(174) Remember, just give me the number rounded to the nearest ten-thousandths.
None
Find the mean of the following probability distribution. xx P(x)P(x) 0 0.1536 1 0.2644 2 0.1896 3 0.2421 4 0.1502 mean = xx P(x)P(x) 0 0.25 1 0.15 2 0.3 3 0.3 Find the mean of this probability distribution. Round your answer to one decimal place.
Use the geometric distribution to calculate the following probabilities. a.Find the probability that the first success occurs on the third trial when ?=0.3p=0.3. b.Find the probability that the first success occurs on the fifth trial when ?=0.3p=0.3. c.Find the probability that the first success occurs on the third trial or later when ?=0.3p=0.3. d.Find the probability that the first success occurs on or before the third trial ?=0.3p=0.3. e.Find the probability that the first success occurs on the second or third trial when ?=0.3p=0.3.
The county highway department recorded the following probabilities for the number of accidents per day on a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown. (Round your answers to three decimal places if needed.) Number of accidents, X 0 1 2 3 4 Probability P(X ) 0.4 0.2 y 0.2 0.1 Find y so that this is a valid probability distribution. Find the mean of this distribution using the value found for y in part a. Find the expected value of number of accidents per day. The variance and standard deviation of this distribution using the value found for y in part a are respectively , ________and _________.
Consider the following probability distribution. Find the probability that x=2. x. 0 1 2 3 4 5 p(x). .12 .25 ? .18 .14 .11
Answer 1&2 plz
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
Megan has purchased the insurance policy from an insurance company to cover the value of hers new car in case if it gets totaled for the price of $1500 per year. Megan's car worth $20000 and the probability of her totaling the car during the length of the policy is estimated to be 0.4%. Let XX be the insurance company's profit. Answer the following questions: 1. Create the probability distribution table for XX : XX outcome profit xx ,$ P(X=x)P(X=x) car is totaled car is not totaled 2. Use the probability distribution table to find the following: E[X]=μX=E[X]=μX= dollars. (Round the answer to 1 decimal place.) SD[X]=σX=SD[X]=σX= dollars. (Round the answer to 1 decimal place.)
what probability value would be needed to complete the following probability distribution? X -2 -1 0 1 2 P(X) 0.13 0.14 0.16 0.29