Consider a normal distribution curve where 90-th percentile is at 20 and the 25-th percentile is at 10. use this information to find the mean, μ, and the standard deviation, σ, of the distribution.

2. Which expression is equivalent to the expression shown below? 20 + 8y - 9y - 21 Select each correct answer. 2 (10 + 4y - 7y - 19) 2 (10 + 4y) - 3 (3y - 7) 4 (5 + 2y - 5y - 17) 4 (5 + 2y) - 3 (3y + 7) - (y + 1) - (1 - y) y - 1

What is absolute value of 4?

Explain how adding - 3/10 + 4/10 is like adding 3+4

Pedro was simplifying four over seven divided by five over eight. and his work is shown below. Identify where he made his error. Original problem: four over seven divided by five over eight. Step 1: four over seven multiplied by eight over five.

Is 4 pounds 2 ounces (greater, lesser, or equal to 70 ounces

Simplify - 6+[4 - (*-2) ]

22.4 cm 18.1 cm 28 cm What's the volume of the triangular prism

Find the area of a square with a diagonal of 8 cm. 16 cm2 12 cm2 18 cm2 32 cm2

What is the answer for this? y = 2 (x - 2) ² - 2

Jeff is thinking of a 5 digit numbers. rick is thinking of a 6 digit numbers. whose number is greater how do you know