Stats Exam 2 Questions with Accurate Answers
A company is studying the number of monthly absences among its 125
employees. The following probability distribution shows the likelihood that
people were absent 0, 1, 2, 3, 4, or 5 days last month.
number of days absent - probability
0 - 0.6
1 - 0.2
2 - 0.12
3 - 0.04
4 - 0.04
5-0
What is the standard deviation of number of days absent? correct answer 1.0778
A company is studying the number of monthly absences among its 125
employees. The following probability distribution shows the likelihood that
people were absent 0, 1, 2, 3, 4, or 5 days last month.
number of days absent - probability
0 - 0.6
1 - 0.2
2 - 0.12
3 - 0.04
4 - 0.04
, 5-0
What is the variance of number of days absent? correct answer 1.1616
A company is studying the number of monthly absences among its 125
employees. The following probability distribution shows the likelihood that
people were absent 0, 1, 2, 3, 4, or 5 days last month.
number of days absent - probability
0 - 0.6
1 - 0.2
2 - 0.12
3 - 0.04
4 - 0.04
5-0
What is the mean number of days absent? correct answer 0.72
A farmer who grows genetically engineered corn is experiencing trouble with corn
borers. A random check of 5,000 ears revealed the following: many of the ears
contained no borers. some ears had one borer. A few had two borers, and so on.
The distribution of the number of borers per ear approximated the Poisson
distribution. The farmer counted 3,500 borers in the 5,000 ears. What is the
probability that an ear of corn selected at random will contain no borers? correct
answer 0.4966
A company is studying the number of monthly absences among its 125
employees. The following probability distribution shows the likelihood that
people were absent 0, 1, 2, 3, 4, or 5 days last month.
number of days absent - probability
0 - 0.6
1 - 0.2
2 - 0.12
3 - 0.04
4 - 0.04
5-0
What is the standard deviation of number of days absent? correct answer 1.0778
A company is studying the number of monthly absences among its 125
employees. The following probability distribution shows the likelihood that
people were absent 0, 1, 2, 3, 4, or 5 days last month.
number of days absent - probability
0 - 0.6
1 - 0.2
2 - 0.12
3 - 0.04
4 - 0.04
, 5-0
What is the variance of number of days absent? correct answer 1.1616
A company is studying the number of monthly absences among its 125
employees. The following probability distribution shows the likelihood that
people were absent 0, 1, 2, 3, 4, or 5 days last month.
number of days absent - probability
0 - 0.6
1 - 0.2
2 - 0.12
3 - 0.04
4 - 0.04
5-0
What is the mean number of days absent? correct answer 0.72
A farmer who grows genetically engineered corn is experiencing trouble with corn
borers. A random check of 5,000 ears revealed the following: many of the ears
contained no borers. some ears had one borer. A few had two borers, and so on.
The distribution of the number of borers per ear approximated the Poisson
distribution. The farmer counted 3,500 borers in the 5,000 ears. What is the
probability that an ear of corn selected at random will contain no borers? correct
answer 0.4966
