Updates Ready Take Test 53 Online Homework MATH134201 Elemen

Updates Ready Take Test: 5.3 Online Homework MATH-1342-01 Elementary... Do you to 334416.1&coul; aunch jsphcourse assessment these updates now com/webapps/assessment/takel https myutb blackboard of having exactly two girls and three boys? O 0.0625 O 0.6252 0.3125 O 0.0312 points Save Answer 1 Question 2 Suppose in certain state wear a seat belt. A random sample of 80 drivers is What is the probability that exactly 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. 12, 1.20, 1.10 12, 13.33, 3.65 O 12, 10.8, 3.29 12, 15.50, 3.94 1 points Question 4 solve the problem.

Solution

Q1= 0.3125

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