The probability that a college student uses Twitter for social networking is 0.92 if 9 students are chosen at random use the binomial probability formula to find the probability that more than 7 use Twitter

0.8417

Step-by-step explanation:

The probability that a college student uses Twitter for social networking is then the probability that a college student does not use Twitter for social networking is

9 students are chosen at random.

Use the binomial probability formula to find the probability that 8 use Twitter:

Use the binomial probability formula to find the probability that 9 use Twitter:

The probability that more than 7 students use Twitter is

the homeowners insurance cost for a 115,000 wood frame house is 80,500.

step-by-step explanation:

it is given that the coverage rate for wood frame house is 0.7.

the value of wood frame house is 115,000.

.

homeowners insurance cost for a 115,000 wood frame house is

therefore the homeowners insurance cost for a 115,000 wood frame house is 80,500.