8/23/2020
APUS CLE : MATH302 I003 Sum 20 : Tests & Quizzes
1/9
1.0/ 1.0 Points
1.0/ 1.0 Points
1.0/ 1.0 Points
Week
3 Test
Return to Assessment List
Part 1 of 6 - Binomial Distribution
4.0/ 5.0 Points
Question 1 of 20Approximately 10% of all people are left-handed. Out of a random sample of 15 people, what is the
Answer Key:
0.0428|.0428
Feedback:
P(x = 4), In Excel,
=BINOM.DIST(4,15,0.1,FALSE)
Question 2 of 20If random variable X has a binomial distribution with n=9 and P(success) =p= 0.4, find the standard
Answer Key:
1.4697
Feedback:
in Excel,
=SQRT(9*0.4*0.6)
Question 3 of 20An unprepared student takes a 10 question TRUE/FALSE quiz and ended up guessing on all theproblems. Find σ
Tests & Quizzes
Tests & Quizzes

8/23/2020
APUS CLE : MATH302 I003 Sum 20 : Tests & Quizzes
2/9
1.0/ 1.0 Points
0.0/ 1.0 Points
1.0/ 1.0 Points
Answer Key:
1.5811
Feedback:
in Excel,
=SQRT(10*0.5*0.5)
Question 4 of 20It was found that 60% of people have a dog as a pet. If a random sample of 11 people is selected,what is the variance of the number of people that have a dog as a pet? (That is, what is Var(X)?) (round to 2 decimal
Question 5 of 20If random variable X has a binomial distribution with n =8 and P(success) = p =0.5, find theprobability that X is at most 3. (That is, find P(X ≤
Feedback:
In Excel,
=BINOM.DIST(3,8,0.5,TRUE)
Part 2 of 6 - Contingency Tables
1.0/ 1.0 Points