The output variable y must be normally distributed about the regression line for each value of the input variable x.
Indicate whether the statement is true or false
Q. 2If the standard deviation for a Poisson distribution is known to be 3.60, the expected value of that Poisson distribution is:
a. 3.60
b. approximately 1.90
c. 8.28
d. 12.96
e. 7.2
Q. 3The wider the confidence interval, the more likely it is that the interval contains the true value of the population parameter.
Indicate whether the statement is true or false
Q. 4The value of the input variable x must be randomly selected to achieve valid regression results.
Indicate whether the statement is true or false
Q. 5The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal 2.19 . Based on this, how many traffic accidents should be expected during a week long period?
a. 15.33
b. 10.95
c. approximately 10.36
d. approximately 12.21
e. none of these
Q. 6A confidence interval for the population proportion p may or may not contain the true value of p.
Indicate whether the statement is true or false
Q. 7In regression analysis, the error term must be normally distributed if references are to be made.
Indicate whether the statement is true or false
Q. 8The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal 2.19 . Then the probability of no accidents on this section of highway during one day period is approximately:
a. 0.457
b. 0.112
c. 0.318
d. 0.296
e. 0.211
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