1. Which of the following random variable would you expect to be discrete? A. The weights of mechanically produced items B. The number of children at a Christmas party C. The times, in seconds, for a 100m sprint D. The lifetimes of resistors 2. x is a random variable, with mean u and standard deviation a. The standardized form of x is z (X- 4)/a. What are the mean and standard deviation, respectively of z? A. 0, 1 В. 1,0 с. 2, 0 D. 2, 1 3. A distribution of data has a mean of 15 and a standard deviation of 2. How many standard deviations away from the mean is a value of 13? A. One standard deviation above the mean B. Two standard deviation above the mean C. One standard deviation below the mean D. Two standard deviation below the mean
1. Which of the following random variable would you expect to be discrete? A. The weights of mechanically produced items B. The number of children at a Christmas party C. The times, in seconds, for a 100m sprint D. The lifetimes of resistors 2. x is a random variable, with mean u and standard deviation a. The standardized form of x is z (X- 4)/a. What are the mean and standard deviation, respectively of z? A. 0, 1 В. 1,0 с. 2, 0 D. 2, 1 3. A distribution of data has a mean of 15 and a standard deviation of 2. How many standard deviations away from the mean is a value of 13? A. One standard deviation above the mean B. Two standard deviation above the mean C. One standard deviation below the mean D. Two standard deviation below the mean
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Choose the letter of the correct answer.Answer number 1,2 and 3.
![1. Which of the following random variable would you expect to be discrete?
A. The weights of mechanically produced items
B. The number of children at a Christmas party
C. The times, in seconds, for a 100m sprint
D. The lifetimes of resistors
2. x is a random variable, with mean u and standard deviation o . The
standardized form of x is z= (X – H)/0. What are the mean and standard
deviation, respectively of z?
А. О, 1
В. 1, 0
с. 2, 0
D. 2, 1
3. A distribution of data has a mean of 15 and a standard deviation of 2. How
many standard deviations away from the mean is a value of 13?
A. One standard deviation above the mean
B. Two standard deviation above the mean
C. One standard deviation below the mean
D. Two standard deviation below the mean](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F55398050-1dbf-4a20-bec0-1cf7f773f8cb%2F4d7f302d-005f-46f8-a660-aa0cbe4670e2%2F4odt5an_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Which of the following random variable would you expect to be discrete?
A. The weights of mechanically produced items
B. The number of children at a Christmas party
C. The times, in seconds, for a 100m sprint
D. The lifetimes of resistors
2. x is a random variable, with mean u and standard deviation o . The
standardized form of x is z= (X – H)/0. What are the mean and standard
deviation, respectively of z?
А. О, 1
В. 1, 0
с. 2, 0
D. 2, 1
3. A distribution of data has a mean of 15 and a standard deviation of 2. How
many standard deviations away from the mean is a value of 13?
A. One standard deviation above the mean
B. Two standard deviation above the mean
C. One standard deviation below the mean
D. Two standard deviation below the mean
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