Author: Anonymous

Identify which of the 5 sampling techniques is being used. A researcher randomly selects and interviews fifty male and fifty female teachers.

Binomial ProbabilityIn a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, what is the probability that no more than 6 belong to an ethnic minority?

According to the empirical rule, for data which is normally distributed, approximately 68% of the data will be within

Identify which of the 5 sampling techniques is being used. The names of 70 contestants are placed in a bag and three names are picked from the bag.

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Of 226 employees selected randomly from one company, 10.62% of them commute by carpooling. Construct a 90% confidence interval for the true percentage of all employees of the company who carpool.

Use the uniform distribution to answer the following questions.   X ~ U ( 0, 30)   Find P(x = 19).  [a7]   P(x > 17) = [a9] (Enter a fraction or a decimal rounded to 2 places.)   Find the 70th percentile. P70 = [a11]    

Do one of the following, as appropriate: (a) Find the critical value , (b) find the critical value , (c) state that neither the normal nor the t distribution applies. 98%; n = 7; σ = 27; population appears to be normally distributed.

Probability values range between:

Binomial ProbabilityAn airline estimates that 92% of people booked on their flights actually show up. If the airline books 75 people on a flight for which the maximum number is 73, what is the probability that the number of people who show up will exceed the capacity of the plane?

Estimate the probability of the event. Of 1049 people who came into a blood bank to give blood, 228 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.