Take Test 53 Online Homework MATH134201 Elementary A Updates

Take Test: 5.3 Online Homework MATH-1342-01 Elementary. A. Updates Ready to Inst 332416 1&courselid; want to restart to int https a mwutb.blackboard.com/webapps/assessment/take/launch.isp?course assessment these updates now or try tor Apple icloud Facebook Twitter wikipedia Yahoo News Popular nts. Rinomial begg com suppose that onl Take Test: 53 O 0.0312 1 points Save Answer agm Question 2 suppose that only 65x of all drivers in a certain state wear a seat belt. A random sample of so drivers is selected. What is the probability that exactly fifty-drivers wear a seat belt? O 0.36 0.92 O 0.08 0.64 1 points. Save Answer Question 3 A calculus class has 120 members and 10% of the students are usually absent. Find the mean, variance, and standard deviation (respectively) of the students usually absent. O 12, 1.20, 1.10 12, 13.33, 3.65 O 12, 10.8, 3.29 12, 15.50, 3.94 1 points Saved Question 4 Solve the problem. suppose that a family has 5 children and that the probability of having a girl is what is the probability

Solution

Q2 N=80 P=0.65 X=50

P(X=x) = (_nC_x) p^x (1-p)^n-x   

P(X = 50) = 0.08

Answer =0.08

Q3

Expectation = np = 12

Variance = np(1 - p) = 10.8

Standard deviation = 3.286

Answer: 12, 10.8, 3.29