It has been recorded that 40% of stores in a region successfully reach the annual sales record. Consider that 12 stores in a region are selected for their sales evaluation. What is the probability that more than 2 of the stores evaluated successfully reach the annual sales?

Suppose that there is a 15% chance that a randomly selected Stat 240 student wears glasses. Out of a class with 35 students, what is the minimum number of students wearing glasses for the percent to be considered unusually high?   Thanks!

A national sports equipment co-op is going to conduct a survey of its members. It knows from collecting data when members join that 68% of them identify as male. Assuming the total number of members is very large and 200 of them are randomly selected to take the survey, what’s the chance less than 60% of these randomly chosen members identify as male? Show all your work and write your answer as a percentage.

A typist makes on average 2 mistakes per page. What is the probability of a particular page having no errors on it? Which distribution should we apply?

Five cards are dealt from a deck of cards without replacement. The number of hearts is counted. Why isn’t the number of hearts a binomial distribution? Please explain.

Suppose a basketball player makes 57.7% of shots and that the probabilty of making each shot is independent. If the basketball player attempts 3 shots, what is the probability of making at least one shot? Enter your answer rounded to at least 4 decimals.

Suppose that more than a decade ago high levels of lead in the blood put 82% of children atrisk. A concerted effort was made to remove lead from the environment. Suppose, accordingto a survey, only 9% of children in the United States are at risk of high blood-lead levels. In arandom sample of 100 children taken more than a decade ago, what is the probability that 70or more had high blood-lead levels? Group of answer choices 0.867 0.839 1.000 0.000 0.117

There are 6 radar stations and the probability of a single radar station detecting an enemy plane is 0.65. Identify the type of histogram for the probability distribution.