The number of cartoons watched on Saturday mornings by students in Mrs. Kelly's first g/ class is shown below. $\begin{array} { l c c c c c c } \text { Number of cartoons watched } \boldsymbol { X } & 0 & 1 & 2 & 3 & 4 & 5 \\ \text { Probability } \boldsymbol { P } ( \boldsymbol { X } ) & 0.15 & 0.20 & 0.30 & 0.10 & 0.20 & 0.05 \end{array}$ What is the mean of the data? de

A) 1.37 B) 2.15 C) 1.18 D) 1.89 A) 1.37 B) 2.15 C) 1.18 D) 1.89

A survey asked 857 people how many times per week they dine out at a restaurant. The results are presented in the following table. $\begin{array}{cc} \hline \text { Number of Times } & \text { Frequency } \\ \hline 0 & 136 \\ 1 & 254 \\ 2 & 233 \\ 3 & 104 \\ 4 & 74 \\ 5 & 21 \\ 6 & 28 \\ 7 & 7 \\ \hline \text { Total } & 857 \end{array}$ Consider the 857 people to be a population. Let $X$ be the number of times per week a person dines out for a person sampled at random from this population. Compute the standard deviation.

A) 2.1 B) 1.9 C) 2.3 D) 1.5 A) 2.1 B) 1.9 C) 2.3 D) 1.5

Exam 5: Discrete Probability Distributions

It is estimated that 25% of households own a riding lawn mower. A sample of 16 households is studied. What is the probability that exactly 5 of these own a riding lawn Mower?

(Multiple Choice)

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Question 101

Which of the following variables are discrete? i. the depth of a submarine ii. the number of torpedoes on a submarine iii. the speed of the submarine

(Multiple Choice)

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Question 102

The number of cartoons watched on Saturday mornings by students in Mrs. Kelly's first g/ class is shown below. Number of cartoons watched 0 1 2 3 4 5 Probability ( ) 0.15 0.20 0.30 0.10 0.20 0.05 What is the mean of the data? de

(Multiple Choice)

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Question 103

A survey asked 857 people how many times per week they dine out at a restaurant. The results are presented in the following table. Number of Times Frequency 0 136 1 254 2 233 3 104 4 74 5 21 6 28 7 7 Total 857 Consider the 857 people to be a population. Let $X$ be the number of times per week a person dines out for a person sampled at random from this population. Compute the standard deviation.

(Multiple Choice)

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Question 104

The probability that a Poisson random variable $X$ is equal to 4 , where $\lambda = 7$ , is

(Multiple Choice)

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Question 105

The number of typographical errors in a document follows a Poisson distribution with a mean of 4 errors per page. Let $X$ represent the number of errors on 2 pages. Find $P ($ Less than 3).

(Multiple Choice)

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Question 106

Continuous random variables are obtained from data that can be measured rather than counted.

(True/False)

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Question 107

Use the multinomial formula to find the probability for the following situation. $X _ { 1 } = 2 , X _ { 2 } = 2 , X _ { 3 } = 2$ when $n = 6 , p _ { 1 } = 0.3 , p _ { 2 } = 0.5 , p _ { 3 } = 0.2$

(Multiple Choice)

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Question 108

In a binomial experiment, the outcome of each trial will depend on the ones before it.

(True/False)

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Question 109

It is estimated that 30% of households own a riding lawn mower. A sample of 12 households is studied. What is the probability that no more than 3 of these own a riding Lawn mower?

(Multiple Choice)

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Question 110

A student takes a true-false test that has 13 questions and guesses randomly at each answer. Let $X$ be the number of questions answered correctly. Find $P ( 11$ or more)

(Multiple Choice)

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Question 111

Which of the following variables are continuous? i. an automobile's gas mileage ii. the air pressure in an automobile's spare tire iii. an automobile's sticker price

(Multiple Choice)

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Question 112

A survey of 13 people at a bookstore showed that five had purchased a hardcover book. If seven people are selected at random, what is the probability that four of them had Purchased a hardcover book?

(Multiple Choice)

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Question 113

A pet supplier has a stock of parakeets of which 20% are blue parakeets. A pet store orders 3 parakeets from this supplier. If the supplier selects the parakeets at random, What is the chance that the pet store gets exactly one blue parakeet?

(Multiple Choice)

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Question 114

The probability that a person will have 0, 1, or 2 dental checkups per year is 0.3 0.1, respectively. If seven people are picked at random, what is the probability that two Will have no checkups, four will have one checkup, and one will have two checkups in The next year?

(Multiple Choice)

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Question 115

In the instructor's answer book for a mathematics text, 8% of the answers are incorrect. Use the Poisson approximation to express the probability that there are exactly 2 Incorrect answers for a homework set with 50 problems.

(Multiple Choice)

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Question 116

$\text { Find the probability } P ( X ; \lambda ) : P ( 3,4 )$

(Multiple Choice)

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Question 117

It is estimated that 25% of households own a riding lawn mower. A sample of 16 households is studied. What is the probability that exactly 5 of these own a riding lawn Mower?

Which of the following variables are discrete? i. the depth of a submarine ii. the number of torpedoes on a submarine iii. the speed of the submarine

The number of cartoons watched on Saturday mornings by students in Mrs. Kelly's first g/ class is shown below. Number of cartoons watched 0 1 2 3 4 5 Probability ( ) 0.15 0.20 0.30 0.10 0.20 0.05 What is the mean of the data? de

The probability that a Poisson random variable $X$ is equal to 4 , where $\lambda = 7$ , is

The number of typographical errors in a document follows a Poisson distribution with a mean of 4 errors per page. Let $X$ represent the number of errors on 2 pages. Find $P ($ Less than 3).

Continuous random variables are obtained from data that can be measured rather than counted.

Use the multinomial formula to find the probability for the following situation. $X _ { 1 } = 2 , X _ { 2 } = 2 , X _ { 3 } = 2$ when $n = 6 , p _ { 1 } = 0.3 , p _ { 2 } = 0.5 , p _ { 3 } = 0.2$

In a binomial experiment, the outcome of each trial will depend on the ones before it.

It is estimated that 30% of households own a riding lawn mower. A sample of 12 households is studied. What is the probability that no more than 3 of these own a riding Lawn mower?

A student takes a true-false test that has 13 questions and guesses randomly at each answer. Let $X$ be the number of questions answered correctly. Find $P ( 11$ or more)

Which of the following variables are continuous? i. an automobile's gas mileage ii. the air pressure in an automobile's spare tire iii. an automobile's sticker price

A survey of 13 people at a bookstore showed that five had purchased a hardcover book. If seven people are selected at random, what is the probability that four of them had Purchased a hardcover book?

A pet supplier has a stock of parakeets of which 20% are blue parakeets. A pet store orders 3 parakeets from this supplier. If the supplier selects the parakeets at random, What is the chance that the pet store gets exactly one blue parakeet?

The probability that a person will have 0, 1, or 2 dental checkups per year is 0.3 0.1, respectively. If seven people are picked at random, what is the probability that two Will have no checkups, four will have one checkup, and one will have two checkups in The next year?

In the instructor's answer book for a mathematics text, 8% of the answers are incorrect. Use the Poisson approximation to express the probability that there are exactly 2 Incorrect answers for a homework set with 50 problems.

$\text { Find the probability } P ( X ; \lambda ) : P ( 3,4 )$

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Data Description

Probability and Counting Rules

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

Exam 5: Discrete Probability Distributions

It is estimated that 25% of households own a riding lawn mower. A sample of 16 households is studied. What is the probability that exactly 5 of these own a riding lawn Mower?

Which of the following variables are discrete? i. the depth of a submarine ii. the number of torpedoes on a submarine iii. the speed of the submarine

The number of cartoons watched on Saturday mornings by students in Mrs. Kelly's first g/ class is shown below. Number of cartoons watched 0 1 2 3 4 5 Probability ( ) 0.15 0.20 0.30 0.10 0.20 0.05 What is the mean of the data? de

The probability that a Poisson random variable XXX is equal to 4 , where λ=7\lambda = 7λ=7 , is

The number of typographical errors in a document follows a Poisson distribution with a mean of 4 errors per page. Let XXX represent the number of errors on 2 pages. Find P(P (P( Less than 3).

Continuous random variables are obtained from data that can be measured rather than counted.

Use the multinomial formula to find the probability for the following situation. X1=2,X2=2,X3=2X _ { 1 } = 2 , X _ { 2 } = 2 , X _ { 3 } = 2X1​=2,X2​=2,X3​=2 when n=6,p1=0.3,p2=0.5,p3=0.2n = 6 , p _ { 1 } = 0.3 , p _ { 2 } = 0.5 , p _ { 3 } = 0.2n=6,p1​=0.3,p2​=0.5,p3​=0.2

In a binomial experiment, the outcome of each trial will depend on the ones before it.

It is estimated that 30% of households own a riding lawn mower. A sample of 12 households is studied. What is the probability that no more than 3 of these own a riding Lawn mower?

A student takes a true-false test that has 13 questions and guesses randomly at each answer. Let XXX be the number of questions answered correctly. Find P(11P ( 11P(11 or more)

Which of the following variables are continuous? i. an automobile's gas mileage ii. the air pressure in an automobile's spare tire iii. an automobile's sticker price

A survey of 13 people at a bookstore showed that five had purchased a hardcover book. If seven people are selected at random, what is the probability that four of them had Purchased a hardcover book?

A pet supplier has a stock of parakeets of which 20% are blue parakeets. A pet store orders 3 parakeets from this supplier. If the supplier selects the parakeets at random, What is the chance that the pet store gets exactly one blue parakeet?

The probability that a person will have 0, 1, or 2 dental checkups per year is 0.3 0.1, respectively. If seven people are picked at random, what is the probability that two Will have no checkups, four will have one checkup, and one will have two checkups in The next year?

In the instructor's answer book for a mathematics text, 8% of the answers are incorrect. Use the Poisson approximation to express the probability that there are exactly 2 Incorrect answers for a homework set with 50 problems.

Find the probability P(X;λ):P(3,4)\text { Find the probability } P ( X ; \lambda ) : P ( 3,4 ) Find the probability P(X;λ):P(3,4)

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Data Description

Probability and Counting Rules

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

The probability that a Poisson random variable $X$ is equal to 4 , where $\lambda = 7$ , is

The number of typographical errors in a document follows a Poisson distribution with a mean of 4 errors per page. Let $X$ represent the number of errors on 2 pages. Find $P ($ Less than 3).

Use the multinomial formula to find the probability for the following situation. $X _ { 1 } = 2 , X _ { 2 } = 2 , X _ { 3 } = 2$ when $n = 6 , p _ { 1 } = 0.3 , p _ { 2 } = 0.5 , p _ { 3 } = 0.2$

A student takes a true-false test that has 13 questions and guesses randomly at each answer. Let $X$ be the number of questions answered correctly. Find $P ( 11$ or more)

$\text { Find the probability } P ( X ; \lambda ) : P ( 3,4 )$