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Stat 200 Week 6 Quiz
  • From Mathematics, Statistics
  • Due on 15 Mar, 2015 12:55:00
  • Asked On 10 Mar, 2015 10:56:55
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01. A probability is a number p such that:

A. 0 < p < 1
B. 0 ≤ p ≤ 1
C. -1 < p < 1
D. -1 ≤ p ≤ 1
E. None of the above

02. The Complement rule states that the probability of an event not occurring is

A. equal to one minus the probability it will occur. 
B. equal to one minus the probability it will not occur. 
C. equal to 0.0
D.  equal to 1.0
E. None of the above

03A tire manufacturer claims that the probability of its XLT tire lasting 50,000 miles or more is 0.80. If three XLT tires are installed on a car what is the probability that all three will last 50,000 miles or more?

A. 0.800.
B. 0.640.
C. 0.240.
D. 0.512. 
E. None of the above 

04. In how many different ways can a work party of be chosen from volunteers?

A. 4 
B. 36
C. 126 
D3024
ENone of the above 

 

05. Which of the following is/are properties of the Binomial Distribution?

A. The number of trials is fixed in advance.
B. The trials are independent.
C. Each trial has exactly two outcomes.
D. The probability of success is the same for each trial.
E. All of the above.

06. A fair coin is tossed 6 times. What is the probability of getting exactly 3 heads in the 6 tosses?

A. 0.2
B. 0.3
C. 0.4
D. 0.5
E. None of the above 

07. The mean of a probability distribution is referred to as the 

A. median
B. mode
C. expected value
D. weighted mean
E. none of the above

08. The number of armed robberies and their probabilities, in a particular city in a month, are given in the table below: 

Number of armed robberies

Probability

1

0.05

2

0.30

3

0.40

4

0.25


How many armed robberies on the average should be expected on a typical month?

A. 10.00
B. 2.50
C. 2.85
D. 3.01
E. None of the above 

09A recent survey of local cell phone retailers showed that of all cell phones sold last month, 64% had a camera, 28% had a music player and 22% had both. The probability that a cell phone sold last month had a camera or a music player is

A. 0.92
B. 0.70
C. 0.18
D. 0.36
E. None of the above 

10. The probability of two events occurring together is referred to as 

A. a marginal probability
B. a conditional probability
C. a subjective probability
D. the multiplication rule
E. a joint probability 

11. A student’s score on a test is 110. The scores are normally distributed with mean µ = 120 and standard deviation σ = 8. Find the student’s z-score.

A. 1.25
B. -1.25
C.  -1.52
D. 0.25
E. None of the above

12To construct a normal distribution, the measurements needed are

A. the mean and the median
B. the mode and the standard deviation
C. the median and the standard deviation
D. the standard deviation and the variance
E. none of the above

13. Which of the following is not a property of the standard normal distribution?
A. It icontinuous
B. It is uniform 
C. It is bell-shaped
D. It iunimodal
E. The curve never touches the horizontal axis.

 

14. Consider the Standard Normal distribution. Find P(-0.73 < z < 2.21)

A. -0.7537
B. 0.9987
C. 0.7534 
D. 0.7537
E. none of the above

15. Consider the Standard Normal distribution. Find the probability P(z > 0.59)

A 0.7224
B 0.2190
C 0.2224
D 0.2776
E None of the above 

16. Consider the Standard Normal distribution. Find the probability that z is less than -1.82.

A. 0.0351
B. -0.0344
C. 0.0344 
C.0.9656 
E. none of the above

17. Find the value of z such that the area to the left of z is 9% of the total area under the curve.

A. 0.82
B. -0.82
C.  1.34
D. -1.34
E. none of the above

18. Find the value of z such that the area to the right of z is 67% of the total area under the standard normal curve.

A 0.44
B -0.44
C 1.00
D -1.50
E None of the above

 

 

 

19.  Find the value of z such that the area between –z and +z is 98% of the total area under the standard normal curve.
A. 2.02
B. 1.96
C. 

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Stat 200 Week 6 Quiz
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STAT 200 Week 6 Quiz | Complete Solution
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  • Submitted On 12 Mar, 2015 08:04:50
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01. A probability is a number p such that:

A. 0 < p < 1
B. 0 ≤ p ≤ 1
C. -1 < p < 1
D. -1 ≤ p ≤ 1
E. None of the above

 

02. The Complement rule states that the probability of an event not occurring is

A. equal to one minus the probability it will occur.&...

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Stat 200 week 6
  • This solution has not purchased yet.
  • Submitted On 15 Mar, 2015 11:16:14
Solution posted by
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Q01. A probability is a number p such that:

A. 0 < p < 1
B. 0 ≤ p ≤ 1
C. -1 < p < 1
D. -1 ≤ p ≤ 1
E. None of the above

Q02. The Complement rule states that the probability of an event not occurring is

A. equal to one minus the probability it will occur. 
B. equal to one minus the probability it will not occur. 
C. equal to 0.0
D.  equal to 1.0
E. None of the above

Q03. A tire manufacturer claims that the probability of its XLT tire lasting 50,000 miles or more is 0.80. If three XLT tires are installed on a car what is the probability that all three will last 50,000 miles or more?

A. 0.800.
B. 0.640.
C. 0.240.
D. 0.512. 
E. None of the above 

Q04. In how many different ways can a work party of 4 be chosen from 9 volunteers?

A. 4 
B. 36
C. 126 
D. 3024
E. None of the above 

 

05. Which of the following is/are properties of the Binomial Distribution?

A. The number of trials is fixed in advance.
B. The trials are independent.
C. Each trial has exactly two outcomes.
D. The probability of success is the same for each trial.
E. All of the above.

06. A fair coin is tossed 6 times. What is the probability of getting exactly 3 heads in the 6 tosses?

A. 0.2
B. 0.3: The probability of having three heads is the number of possible combinations of all the tosses divided by the number of the total possible outcomes. i.e. 6C3=20;


C. 0.4
D. 0.5
E. None of the above&nb...

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Stat 200 Week 6 Quiz
  • This solution has not purchased yet.
  • Submitted On 14 Jul, 2015 08:49:25
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01. A probability is a number p such that: A. 0 < p < 1 B. 0 ≤ p ≤ 1 C. -1 < p < 1 D. -1 ≤ p ≤ 1 E. None of the above 02. The Complement rule states that the probability of an event not occurring is A. equal to one minus the probability it will occur. B. equal to one minus the probability it will not occur. C. equal to 0.0 D. equal to 1.0 E. None of the above 03. A tire manufacturer claims that the probability of its XLT tire lasting 50,000 miles or more is 0.80. If three XLT tires are installed on a car what is the probability that all three will last 50,000 miles or more? A. 0.800. B. 0.640. C. 0.240. D. 0.512. E. None of the above 04. In how many different ways can a work party of 4 be chosen from 9 volunteers? A. 4 B. 36 C. 126 D. 3024 E. None of the above 05. Which of the following is/are properties of the Binomial Distribution? A. The number of trials is fixed in advance. B. The trials are independent. C. Each trial has ...
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