The number of suits sold per day at a retail store is shown in the table, with the corresponding probabilities. PLEASE FIND MEAN, VARIANCE, AND STANDARD DEVIATION
Number of suits sold X | 20 | 21 | 22 | 23 | 24 |
Probability P(X) | 0.1 | 0.2 | 0.3 | 0.1 | 0.3 |
TOPIC: Mean,variance and standard deviation of a random variable.
The number of suits sold per day at a retail store is shown in the table,...
The number of computers sold per day at a local computer store, along withits corresponding probabilities, is shown in the table. calculate the mean, variance and standard deviation of the probability distribution.
please answer both questions Question 5 of 17 (1 point) View problem in a pop-Up Approximately 10.8% of American high school students drop out of school before graduation. Assume the variable is binomial. Choose 18 students entering high school at random. Find these probabilities. Round intermediate calculations and final answers to three decimal places. Source: www.infoplease.com Part 1 No more than three drop out P(no more than three drop out)-0.878 Part 2 All 18 stay in school and graduate P(all...
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 PLEASEFIND MEAN, VARIANCE, AND STANDARD X 1234 P(X) 0.3 0.1 0.1 0.1 0.4
A pizza shop owner determines the number of pizzas that are delivered each day PLEASE FIND MEAN, VARIANCE, AND STANDARD DEVIATION Number of deliveries X 36 37 38 39 40 Probability P(X) 0.1 0.1 0. 0.3 0.2
We are interested in determining the probability that a retail store will meet its daily revenue goal of $100. Analysis of sales history indicates that daily demand, D is random and independent of the demand on other days. Assume D follows the distribution below P(D=d) = 0.3, d=0 0.3, d=1 0.2, d=2 0.1, d=3 0.1, d=4 Furthermore, due to a complicated discount structure, the shop has determined that their revenue per day can be modeled as R(s) = −100 cos(20s)...
The probabilities that a player will get 4-9 questions right on a trivia quiz are shown belovw PLEASE FIND MEAN, VARIANCE, AND STANDARD DEVIATION X 4 56 789 P(X) 0.06 0.2 0.4 0.1 0.14 0.1
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C x P(x) x P(x) x P(x) 25 0.2 25 0.2 25 0.2 50 0.4 50 0.4 50 0.4 75 0.1 75 0.1 75 0.1 100 0.3 100 0.5 100 0.7 a. Which of the above tables is a probability distribution? b. Using the correct probability distribution, find the probability that x is: (Round the final answers to...
The probability that a player will get 6-11 questions right on a trivia quiz are shown below. (See table) Table 2: Player Proability X 6, 7, 8, 9, 10, 11, P(X) 0.05, 0.1, 0.3, 0.1, 0.15, 0.3 Find the mean. Find the variance. Find the standard deviation.
x P(X=x) 10 0.1 20 0.15 30 0.2 40 50 0.15 60 0.15 The incomplete table at right is a discrete random variable x's probability distribution, where x is the number of people who will enter a retail clothing store on Saturday. Answer the following: (a) Determine the value that is missing in the table. (b) Explain the meaning of P(x < 40) as it applies to the context of this problem. (c) Determine the value of P(x > 40):...
1. Let X be the number of homes sold per week by a group of realtors. The table lists the probability distribution of X. Find the mean and standard deviation of X. X 0 1 2 3 4 5 P(X) .17 24 19 18 .14 .08