Math Answers

a manufacture has 15 years, 8.5 percent mortgage for 100,000 birr on a building. payments are made monthly.

a. find the monthly payment

b. how much interest will be paid?

A teacher gets the height of each student in his class,and it has the mean of 161 cm and a standard deviation of 10cm

Approximately what percent of these student have a height greater than 164 cm?

Ron tossed unbiased coin, on each toss, he wins P50 if head appears, and loses P40 if tail appears. What will be the expected value of his gain? 

What is the domain of the function is this proposition?

a group of students got the following scores in an achievement test:9,12,15,18,21,and 24.consider sample of size 3 that can be drawn from this population

A. determine and laser the possible samples and the corresponding sample means

B. Construct a sampling distribution of the resulting sample means

C. Draw a histogram of the sampling distribution of the sample means

Mohammad has 11 new magazines to read. Let M be the number of magazines he would have left to read after reading R of them. Write an equation relating M to R. Then graph your equation using the axes below.

Four coins are tossed together and the random variable S gives the number of tails that will appear.

Find the variance for the sample given in a.

2, 4, 7, 12, 15

Four coins are tossed. Let H be the random variable representing the number of the heads occur. Find the values and construct the probability distribution of the random variable H.

Let f(x)= (x^2-2x)/(x^2-4)

For the function above, please find the following:

a) The domain of the function

b) The real zeroes of the function

c) The limit as × approaches 2 of f(x).

d) Plot f(x)