Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Textbook Question
Chapter 5.4, Problem 101E
Polonium. In the 1910 article “The
- a. exactly four.
- b. at most one.
- c. between two and five, inclusive.
- d. Construct a table of probabilities for the random variable Y. Compute the probabilities until they are zero to three decimal places.
- e. Draw a histogram of the probabilities in part (d).
- f. On average, how many alpha particles reach the screen during an 8-minute interval?
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Polonium. In the 1910 article “The Probability Variations in the Distribution of α Particles” (Philosophical Magazine, Series 6, No. 20, pp. 698–707), E. Rutherford and H. Geiger described the results of experiments with polonium. The experiments indicate that the number of α (alpha) particles that reach a small screen during an 8-minute interval has a Poisson distribution with parameter λ = 3.87.
Determine the probability that, during an 8-minute interval, the number, Y, of α particles that reach the screen is
a. exactly four.
b. at most one.
c. between two and five, inclusive.
d. Construct a table of probabilities for the random variable Y . Compute the probabilities until they are zero to three decimal places.
e. Draw a histogram of the probabilities in part (d).
f. On average, how many alpha particles reach the screen during an 8-minute interval?
3.6. The random variable X takes the value of 5 with a probability of 0.30 and has a triangular
distribution in the range [0, 20] as shown in the following figure (Fig. 3.6).
a) What should be the value of the coefficient k so that X has a valid probability density
function? Write down the equation that specifies the probability distribution of X.
b) Find the mean, median and mode values of X.
c) Find the variance, standard deviation and coefficient of variation of X.
d) If it is known that X will not get a value greater than 15, what is the probability that X will
be greater than 12?
3-16
CE 589 (2021-22 Spring Semester)
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fx(x)
Xx
0
5 10
20
20
Figure 3.6 Problem 3.6
MSY
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Chapter 5 Solutions
Introductory Statistics (10th Edition)
Ch. 5.1 - Fill in the blanks. a. A relative-frequency...Ch. 5.1 - Provide an example (other than one discussed in...Ch. 5.1 - Let X denote the number of siblings of a randomly...Ch. 5.1 - Fill in the blank. For a discrete random variable,...Ch. 5.1 - Suppose that you make a large number of...Ch. 5.1 - What rule of probability permits you to obtain any...Ch. 5.1 - A variable x of a finite population has the...Ch. 5.1 - A variable y of a finite population has the...Ch. 5.1 - A variable y of a finite population has the...Ch. 5.1 - A variable x of a finite population has the...
Ch. 5.1 - Space Shuttles. The National Aeronautics and Space...Ch. 5.1 - Persons per Housing Unit. From the document...Ch. 5.1 - Major Hurricanes. The Atlantic Hurricane Database...Ch. 5.1 - Childrens Gender. A certain couple is equally...Ch. 5.1 - Dice. When two balanced dice are rolled, 36...Ch. 5.1 - World Series. The World Series in baseball is won...Ch. 5.1 - Archery. An archer shoots an arrow into a square...Ch. 5.1 - Solar Eclipses. The World Almanac provides...Ch. 5.1 - Black Bear Litters. In the article Reproductive...Ch. 5.1 - All-Numeric Passwords. The technology consultancy...Ch. 5.1 - Suppose that P(Z 1.96) = 0.025. Find P(Z 1.96)....Ch. 5.1 - Suppose that T and Z are random variables. a. If...Ch. 5.1 - Prob. 23ECh. 5.2 - What concept does the mean of a discrete random...Ch. 5.2 - Comparing Investments. Suppose that the random...Ch. 5.2 - In Exercises 5.275.30, we have provided the...Ch. 5.2 - In Exercises 5.275.30, we have provided the...Ch. 5.2 - In Exercises 5.275.30, we have provided the...Ch. 5.2 - In Exercises 5.275.30, we have provided the...Ch. 5.2 - In Exercises 5.315.35, we have provided the...Ch. 5.2 - In Exercises 5.315.35, we have provided the...Ch. 5.2 - In Exercises 5.315.35, we have provided the...Ch. 5.2 - In Exercises 5.315.35, we have provided the...Ch. 5.2 - In Exercises 5.315.35, we have provided the...Ch. 5.2 - World Series. The World Series in baseball is won...Ch. 5.2 - Archery. An archer shoots an arrow into a square...Ch. 5.2 - All-Numeric Passwords. The technology consultancy...Ch. 5.2 - Expected Value. As noted in Definition 5.4 on page...Ch. 5.2 - Evaluating Investments. An investor plans to put...Ch. 5.2 - Homeowners Policy. An insurance company wants to...Ch. 5.2 - Prob. 42ECh. 5.2 - Equipment Breakdowns. 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The factory manager in...Ch. 5.3 - In probability and statistics, what is each...Ch. 5.3 - Under what three conditions are repeated trials of...Ch. 5.3 - Explain the significance of binomial coefficients...Ch. 5.3 - Discuss the pros and cons of binomial probability...Ch. 5.3 - What is the binomial distribution?Ch. 5.3 - Suppose that a simple random sample is taken from...Ch. 5.3 - Give two examples of Bernoulli trials other than...Ch. 5.3 - What does the bi in binomial signify?Ch. 5.3 - Compute 3!, 7!, 8!, and 9!.Ch. 5.3 - Find 1!, 2!, 4!, and 6!.Ch. 5.3 - Evaluate the following binomial coefficients. a....Ch. 5.3 - Evaluate the following binomial coefficients. a....Ch. 5.3 - Evaluate the following binomial coefficients. a....Ch. 5.3 - Determine the value of each binomial coefficient....Ch. 5.3 - For each of the following probability histograms...Ch. 5.3 - For each of the following probability histograms...Ch. 5.3 - Pinworm Infestation. Pinworm infestation, which is...Ch. 5.3 - Psychiatric Disorders. The National Institute of...Ch. 5.3 - In each of Exercises 5.675.72, we have provided...Ch. 5.3 - In each of Exercises 5.675.72, we have provided...Ch. 5.3 - In each of Exercises 5.675.72, we have provided...Ch. 5.3 - In each of Exercises 5.675.72, we have provided...Ch. 5.3 - In each of Exercises 5.675.72, we have provided...Ch. 5.3 - In each of Exercises 5.675.72, we have provided...Ch. 5.3 - Prob. 73ECh. 5.3 - Psychiatric Disorders. Use Procedure 5.1 on page...Ch. 5.3 - Tossing a Coin. If we repeatedly toss a balanced...Ch. 5.3 - Rolling a Die. If we repeatedly roll a balanced...Ch. 5.3 - Horse Racing. According to the Daily Racing Form,...Ch. 5.3 - Gestation Periods. The probability is 0.314 that...Ch. 5.3 - Traffic Fatalities and Intoxication. The National...Ch. 5.3 - Multiple-Choice Exams. A student takes a...Ch. 5.3 - Love Stinks? J. Fetto, in the article Love Stinks...Ch. 5.3 - Carbon Tax. A poll commissioned by Friends of the...Ch. 5.3 - Video Games. A pathological video game user (PVGU)...Ch. 5.3 - Recidivism. In the Scientific American article...Ch. 5.3 - Roulette. A success, s, in Bernoulli trials is...Ch. 5.3 - Sampling and the Binomial Distribution. Refer to...Ch. 5.3 - Sampling and the Binomial Distribution. Following...Ch. 5.3 - The Hypergeometric Distribution. In this exercise,...Ch. 5.3 - To illustrate, again consider the Mega Millions...Ch. 5.3 - To illustrate, consider the following problem:...Ch. 5.4 - Identify two uses of Poisson distributions.Ch. 5.4 - Why cant all the probabilities for a Poisson...Ch. 5.4 - For a Poisson random variable, what is the...Ch. 5.4 - What conditions should be satisfied in order to...Ch. 5.4 - Prob. 95ECh. 5.4 - Prob. 96ECh. 5.4 - In each of Exercises 5.965.99, we have provided...Ch. 5.4 - Prob. 98ECh. 5.4 - In each of Exercises 5.965.99, we have provided...Ch. 5.4 - Amusement Ride Safety. 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