Math Answers

Lea now has $2,000. How much would she have after 2 years if she leaves it invested at 2% with annual compounding?

Suppose that the bank customers arrive randomly and independently on an average of 3.2 customers every 4

minutes. What is the probability that:

a. Exactly two customers arrive in every 4 minutes?

b. Exactly two customers will arrive in every 8 minutes interval?

c. One or more customers will arrive in every 12 minutes?

suppose the weight of 800 students are normally distributed with mean 75kg and standard deviation 5kg. find the numer of students that weigh more than 80kg

The scores for a mathematics course seem to be normally distributed with mean 70 & standard deviation of 8. If the instructor wishes to give an A grade to 10% of the students, what should be the dividing line between an A grade and a B grade

In how many ways can a teacher select 6 delegates to a national convention from a group of 24 students

How many ways 6 delegates to the convention from a group of 24 qualified students

•Box A and B contains 1, 2, 3, 4. Construct the probability distribution and draw a histogram of the sum when one number from each box is  taken with placement

The image of straight line 2x-y+3=0 under the transformation w=z-2 is

Find the exact distance between the pair of points. (2, 0), and (4, -5)

A random sample of size 144 is drawn from a population whose distribution, mean, and standard deviation are all unknown. The summary statistics are x−−=58.2 and s = 2.6.