64% of the workers at Motor Works are female, while 66% of the workers at City Bank are female.

64% of the workers at Motor Works are female, while 66% of the workers at City Bank are female. If one of there companies is selected at random (assume a 50-50 chance for each), and then a worker is selected at random, what is the probability that the worker will be female? Express as a percentage

Using combinations to determine the all possible number of ways.

An award presentation has been devised for seven people: Jeff, Karen, Lyle, Maria, Norm, Olivia and Paul. In how many ways can the awards alternate between men and women with the first award being presented to a woman?

Find the mean of the group data

using the employment information in the table on Alpha Corporation, find the mean for the grouped data. Years of service Frequency 1-5 5 6-10 20 11-15 25 16-20 10 21-25 5 26-30 3

Determining the probability from the given situation.

An elevator has 4 passengers and 8 floors. Find the probability that no 2 passengers get off on the same floor considering that it is equally likely that a person will get off at any floor.

Normal curve approximation

A 56-question multiple choice test has 4 possible answers for each question and a student chooses the answers to each problem at random. A student selects 16 correct answers. Find the probability of the result using the normal curve approximation to the binomial distribution.