sportstone1999 sportstone1999

12-05-2024
Mathematics

Answered

We can use the z-score to find the probability of many other events. Let’s explore those now. a. Suppose that the mean time a typical American teenager spends doing homework each week is 4.2 hours. Assume the standard deviation is 0.9 hour. Assuming the variable is normally distributed, find the percentage of American teenagers who spend less than 3.5 hours doing homework each week. b. According to a College Board report, the population of American 2008 high school graduates had a mean Math SAT score of 515 with standard deviation of 116. What is the probability that of a randomly selected senior from this population scoring between 500 and 800 on the Math portion of the SAT Reasoning Test?

Answer :

Other Questions

12. Use exponent laws to simplify the following expressions. Express your final answers in simplest form with positive exponents only. Show all your work. (6 ma

17) It is safe to eat baked goods that have been handled using:A. Finger tips B. Deli paper C. Bare hands D. Cloth towel

What is the distance between [tex]\((-6, 2)\)[/tex] and [tex]\((8, 10)\)[/tex] on a coordinate grid?A. [tex]\(\sqrt{60}\)[/tex]B. [tex]\(\sqrt{68}\)[/tex]C. [te

Select the correct answer.What were Joseph Pulitzer and William Randolph Hearst well-known pioneers of?A. Publishing news journals aimed at the upper social cla

Drag each tile to the correct box.US foreign policies have changed over time. Place the foreign policies and the military conflicts in the correct order.1. isol

Functional Skills Maths Level 2: General Practice Paper 6Question 14 of 30Overall Score: [tex]$15\%$[/tex]14. In a class, [tex]$\frac{3}{4}$[/tex] of the 36 pup

Standing waves only occur whenA. there are two identical waves traveling in opposite directions.B. there are an integer number of loops.C. two waves overlap and

What is the purpose of using a thesaurus?A. To find synonyms and antonyms for words. B. To check the spelling of words. C. To find the definitions of words. D.

Corn syrup is an additive that is found in many foods. Because corn syrup has no nutritional value and only provides empty calories, it may be dried and used as

A software designer is mapping the streets for a new racing game. All of the streets are depicted as either perpendicular or parallel lines. The equation of the