The scores of a high school entrance exam are approximately normally distributed with a given mean m = 82.4 and standard deviation = 3.3. What percentage of the scores are between 75.8 and 89?

A lot of 1000 components contains 300 that are defective. Two componentsare drawn at random and tested. Let A be the event that the first componentdrawn is defective, and let B be the event that the second component drawnis defective. Find P (B|A).

The length of a rectangle is nine inches less than twice the width. If the per meter od the rectangle is 84 inches find the dimensions of the rectangle

What is a shape that has 3 unequal sides

Mrs. Bull spilled coffee on her computer during the first week of school! The total cost after tax to repair its is represented by 0.08 (50h) + 50h, where h represents the number of hours it takes to repair her computer.

A student has taken two math tests. On the first, he received a score of 46 out of 50 questions correct, and on the second, he received a score of 27 out of 30 questions correct.

How long will it take if your going 45 mph for 135 miles?

Nadia puts $500 int a savings account. at the end of 1 year, she had earned $30 in intrest. What intrest rate was the bank paying

4th grade math patterns 18250, 18500, 19000, 20000 what's the next number?

3.871 round decimal to the underlined place value

You are interested in determining the effects of a recent coupon promotion on customer purchases at a local grocery store. You sample of 50 customer receipts one day after the coupon is distributed and find the customers' mean spending to be $97.