Question

#### All Subjects Statistics General Statistics

Offered Price \$14.00

# Stats mcq-When referring to the normal probability distribution, there is not just one; there is

Question # 00013044
Subject: Statistics
Due on: 05/12/2014
Posted On: 04/21/2014 12:10 PM

Rating:
4.1/5
Posted By
Questions:
4722
Tutorials:
4991
Feedback Score:

Question

1) When referring to the normal probability distribution, there is not just one; there is a "family" of distributions.
True
or
False

2) The standard normal probability distribution is unique because it has:
Choose one:
Any mean and a standard deviation of 1
-A mean of 0 and any standard deviation
-A mean of 0 and a standard deviation of 1
-A mean of 1 and any standard deviation
3) Tables of normal distribution probabilities are found in many statistics books. These probabilities are calculated from a normal distribution with. Choose one:
a mean of 100 and a standard deviation of 15
a mean of 1 and a standard deviation of 1
a mean of 0 and a standard deviation of 1
a mean of 0 and a standard deviation of 15
4) What is the percentage of the total area under the normal curve within plus and minus two standard deviations of the mean? Choose one:
34.13%
68.26%
99.74%
95.44%
5) The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 minutes. What is the probability that a flight is between 125 and 140 minutes? Choose one:
1.00
0.333 minutes
0.5
10 minutes
6) If an average of 12 customers are served per hour, then one customer arrives every. Choose one.
5 minutes
10 minutes
60 minutes
12 minutes
7) In a uniform probability distribution, P(x) is constant between the distribution's minimum and maximum values.
True
or
False

8) The total area of a normal probability distribution is. Choose one:
-approximated by the binomial distribution.
-1.00.
-dependent on a value of 'z'.
-between -3.0 and 3.0.

9) The shape of any uniform probability distribution is. Choose one:
-Positively skewed
-Rectangular
-Negatively skewed
-Bell shaped
10) The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 minutes. What is the mean? Choose one:
-150 minutes
-120 minutes
-270 minutes
-135 minutes
11) For the exponential distribution, the mean and standard deviation are equal.
True
or
False
12) Some normal probability distributions have equal arithmetic means, but their standard deviations may be different.
True
or
False
13) A random variable from an experiment where outcomes are normally distributed. Choose one:
-can have a mean of 0 and a standard deviation of 1.
-can have only a few discrete values.
-can have no values.
-can have any value between - ? and + ?.
14) If an average of 60 customers are served per hour, then one customer arrives every. Choose one:
-1 minute
-12 minutes
-60 minutes
-10 minutes

15) What is a normal distribution with a mean of 0 and a standard deviation of 1 called? Choose one:
-Binomial probability distribution
-Standard normal distribution
-Frequency distribution
-Z-score

16) A binomial distribution has 50 trials (n = 50) with a probability of success of 0.50 (?=0.50). To use the normal distribution to approximate the binomial, what are the mean and standard deviation? Choose one?
µ =25 and ? = 4.33
µ =25 and ? = 12.5
µ = 25 and ? = 3.5355
µ =50 and ? = 100
17) In an illustration of a normal probability distribution, a shaded area represents. Choose one:
-a probability
-a combination
-a standard deviation
-a permutation
18) Two normal distributions are compared. One has a mean of 10 and a standard deviation of 10. The second normal distribution has a mean of 10 and a standard deviation of 2. Which of the following is true?
-The distributions are from two different families of distributions
-The dispersions of the distributions are different
-The dispersions of the distributions are the same
-The locations of the distributions are different
19) The area under the normal curve within plus and minus one standard deviation of the mean is about 68.26%.
True
or
False
20) The standard deviation of any uniform probability distribution is. Choose one of the following:

Tutorials for this Question
Available for
\$17.00

#### Stats mcq-When referring to the normal probability distribution, there is not just one; there is

Tutorial # 00012591
Posted On: 04/21/2014 12:11 PM
Posted By:
vikas
Questions:
4722
Tutorials:
4991
Feedback Score:
Tutorial Preview …probability xxxxxxxxxxxxx there…
Attachments
Statistics_Homework_-_Multiple_choice_Questions_Solution.docx (20.75 KB)
Preview: mean xxx a xxxxxxxx deviation of xxx mean of x and xxx xxxxxxxx deviation-A xxxx of 0 xxx a standard xxxxxxxxx of xxx xxxx of x and any xxxxxxxx deviation3) Tables xx normal xxxxxxxxxxxx xxxxxxxxxxxxx are xxxxx in many xxxxxxxxxx books These xxxxxxxxxxxxx are xxxxxxxxxx xxxx a xxxxxx distribution with xxxxxx one:a mean xx 100 xxx x standard xxxxxxxxx of 15a xxxx of 1 xxx a xxxxxxxx xxxxxxxxx of xx mean of x and a xxxxxxxx deviation xx xx mean xx 0 and x standard deviation xx 154) xxxx xx the xxxxxxxxxx of the xxxxx area under xxx normal xxxxx xxxxxx plus xxx minus two xxxxxxxx deviations of xxx mean? xxxxxx xxxxxx 13%68 xxxxx 74%95 44%5) xxx time to.....
* - Additional Paypal / Transaction Handling Fee (3.9% of Tutorial price + \$0.30) applicable