NT 2: The number of families waiting to get their picture taken with an Elvis impersonator...
NT 2: The number of families waiting to get their picture taken with an Elvis impersonator at the mall is a random variable X with possible values: 0, 1, 2, 3, and probabilities .2, .3, .15, and .35 respectively. A randomly selected family will have 2, 3, or 4 people with probabilities .1, .7, and .2 respectively. Let Y = the total number of people in line (Assume family sizes are independent). a) Determine P(X=2, Y=5) b) Determine P(X=3, Y=10)
Answers are not 0.042 and 0.1071
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NT 2: The number of families waiting to get their picture taken
with an Elvis impersonator...
1. The number of customers waiting for gift-wrap service at a department store is an RV...
1. The number of customers waiting for gift-wrap service at a department store is an RV X with possible values 0, 1, 2, 3, 4 and corresponding probabilities .1, .2, .3, .25, .15. A randomly selected customer will have 1, 2, or 3 packages for wrapping with probabilities .6, .3, and .1, respectively. Let Y be the total number of packages to be wrapped for the customers waiting in line (assume that the number of packages submitted by one customer...
[-14 Points] DETAILS DEVORESTAT9 5.E.005.MI. The number of customers waiting for gift-wrap service at a department...
[-14 Points] DETAILS DEVORESTAT9 5.E.005.MI. The number of customers waiting for gift-wrap service at a department store is an rv X with possible values 0, 1, 2, 3, 4 and corresponding probabilities 0.1, 0.2, 0.3, 0.25, 0.15. A randomly selected customer will have 1, 2, or 3 packages for wrapping with probabilities 0.5, 0.35, and 0.15, respectively. Let Y = the total number of packages to be wrapped for the customers waiting in line (assume that the number of packages...
pls explain as much as possible, thanks!! The number of customers waiting for gift-wrap service at...
pls explain as much as possible, thanks!!
The number of customers waiting for gift-wrap service at a department store is an rv x with possible values 0, 1, 2, 3, 4 and corresponding probabilities 0.1, 0.2, 0.3, 0.25, 0.15. A randomly selected customer have 1. 2. or 3 packages for wrapping with probabilities 0.55,0.25, and 0.2, respectively. Let the total number of packages to be wrapped for the customers waiting in line (ume that the number of packages submitted by...
An agency collects demographics concerning the number of people in families per household in a certain...
An agency collects demographics concerning the number of people in families per household in a certain country. Assume the distribution of the number of people per household is as shown in the table to the right. a. Calculate the expected number of people in families per household in the country. b. Compute the standard deviation of the number of people in families per household. x P(x) 2 0.25 3 0.24 4 0.31 5 0.12 6 0.05 7 0.03...
1. An equal number of families from eight different cities of various sizes were asked their fami...
1. An equal number of families from eight different cities of various sizes were asked their family incomes and how much ney they spent for food, clothing, and housing per year. The city sizes (x1), average annual family income (2), and average family expenditure (y) are summarized below. (City size in 1000s, family income and expenditure in $100s.) City Size ( 30 50 75 100 150 200 175 120 Income (x2) Expenditure (y):65 77 7980 82 90 84 81 122...
the following table presents the probability distribution of the number of vacations X taken last year...
the following table presents the probability distribution of
the number of vacations X taken last year for a randomly chosen
family.
Question 6 0.1 pts The following table presents the probability distribution of the number of vacations X taken last year for a randomly chosen family. Find P(1 or more). x 0 P(x) 0.15 1 0.56 2 0.15 3 4 0.1 0.04 0.29 0.56 0.71 0.85
Let the random variable X count the number of adults out of five randomly selected adults...
Let the random variable X count the number of adults out of five randomly selected adults who reported sleepwalking. The table gives the probability distribution of X X P(X=x) 0 0.142 1 0.353 2 3 0.137 4 0.042 5 0.006 A) Determine the missing probability that ensures the tables is a valid discrete probability distribution B) Compute the probability that among five randomly selected adults fewer than three report sleepwalking C) Compute the probability that among five randomly selected adults...
(5) 2. Let X be the number of packages being mailed by a randomly selected customer at a certain ...
(5) 2. Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose that the distribution of X is as follows: T 1 2 3 p(x) 3 .2 .5 A a random sample of size n-3 is selected. a) find pmf of Xn and construct a histogram, b) give two smallest values of S2, (S2 is the sample variance) and find their probabilities.
(5) 2. Let X be the number of...
Number of Customers Waiting Time (Minutes) 5 47 2 27 4 36 4 44 6 52...
Number of Customers Waiting Time (Minutes) 5 47 2 27 4 36 4 44 6 52 3 21 7 82 3 43 8 69 4 28 You may need to use the appropriate appendix table or technology to answer this question. Many small restaurants in Portland, Oregon, and other cities across the United States do not take reservations. Owners say that with smaller capacity, no-shows are costly, and they would rather have their staff focused on customer service rather than...
2. In November of each year, a walk-in clinic allows people to walk in to get...
2. In November of each year, a walk-in clinic allows people to walk in to get a flu shot. Let X be the number of people who come to the clinic for a flu shot on a randomly selected day in November). Suppose X has the following distribution: 2 0 1 2 3 4 5 P(X = 2) 0.3 0.1 0.2 0.1 0.1 0.2
1. The number of customers waiting for gift-wrap service at a department store is an RV X with possible values 0, 1, 2, 3, 4 and corresponding probabilities .1, .2, .3, .25, .15. A randomly selected customer will have 1, 2, or 3 packages for wrapping with probabilities .6, .3, and .1, respectively. Let Y be the total number of packages to be wrapped for the customers waiting in line (assume that the number of packages submitted by one customer...
[-14 Points] DETAILS DEVORESTAT9 5.E.005.MI. The number of customers waiting for gift-wrap service at a department store is an rv X with possible values 0, 1, 2, 3, 4 and corresponding probabilities 0.1, 0.2, 0.3, 0.25, 0.15. A randomly selected customer will have 1, 2, or 3 packages for wrapping with probabilities 0.5, 0.35, and 0.15, respectively. Let Y = the total number of packages to be wrapped for the customers waiting in line (assume that the number of packages...
pls explain as much as possible, thanks!!
The number of customers waiting for gift-wrap service at a department store is an rv x with possible values 0, 1, 2, 3, 4 and corresponding probabilities 0.1, 0.2, 0.3, 0.25, 0.15. A randomly selected customer have 1. 2. or 3 packages for wrapping with probabilities 0.55,0.25, and 0.2, respectively. Let the total number of packages to be wrapped for the customers waiting in line (ume that the number of packages submitted by...
1. An equal number of families from eight different cities of various sizes were asked their family incomes and how much ney they spent for food, clothing, and housing per year. The city sizes (x1), average annual family income (2), and average family expenditure (y) are summarized below. (City size in 1000s, family income and expenditure in $100s.) City Size ( 30 50 75 100 150 200 175 120 Income (x2) Expenditure (y):65 77 7980 82 90 84 81 122...
the following table presents the probability distribution of
the number of vacations X taken last year for a randomly chosen
family.
Question 6 0.1 pts The following table presents the probability distribution of the number of vacations X taken last year for a randomly chosen family. Find P(1 or more). x 0 P(x) 0.15 1 0.56 2 0.15 3 4 0.1 0.04 0.29 0.56 0.71 0.85
(5) 2. Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose that the distribution of X is as follows: T 1 2 3 p(x) 3 .2 .5 A a random sample of size n-3 is selected. a) find pmf of Xn and construct a histogram, b) give two smallest values of S2, (S2 is the sample variance) and find their probabilities.
(5) 2. Let X be the number of...
2. In November of each year, a walk-in clinic allows people to walk in to get a flu shot. Let X be the number of people who come to the clinic for a flu shot on a randomly selected day in November). Suppose X has the following distribution: 2 0 1 2 3 4 5 P(X = 2) 0.3 0.1 0.2 0.1 0.1 0.2
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