Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Oct 08, 2024

I developed an achievement test and normalized it on people throughout the country over a year. My test has scores that are normally distributed with

I developed an achievement test and normalized it on people throughout the country over a year. My test has scores that are normally distributed with a mean of 100 and a standard deviation of 20.

a.Find the probability that a randomly selected adult has IQ < 115

b.Find the probability that a randomly selected adult has IQ > 70

c.Find P_30,which is the IQ score at the 305h percentile.

d.What percentage of adults have scores between 80 and 120?

Step by Step Solution

There are 3 Steps involved in it

Step: 1

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Numerical Analysis

Authors: Richard L. Burden, J. Douglas Faires

9th edition

538733519, 978-1133169338, 1133169333, 978-0538733519

More Books

Students also viewed these Mathematics questions

Question

★★★★★

For each transaction listed in E8-4, indicate the amount and direction (+ or ) of effects on the financial statement accounts and on the overall accounting equation. E8-4 Prior to recording the...

Answered: 1 week ago

Question

★★★★★

Boilermaker, Inc. reported taxable income of $500,000 this year and paid federal income taxes of $170,000. Not included in the company's computation of taxable income is tax-exempt income of $20,000,...

Answered: 1 week ago

Question

★★★★★

2. How does the post- Fordist database marketing model differ from the conventional DM approach and what are the changes (social, cultural, economic, technological, etc.) that have made this change...

Answered: 1 week ago

Question

★★★★★

Pete Patel is the sports liaison for the student government association. During the fall semester, the group promotes school spirit with orange effect t-shirts. The shirts feature a special...

Answered: 1 week ago

Question

★★★★★

I developed an achievement test and normalized it on people throughout the country over a year. My test has scores that are normally distributed with a mean of 100 and a standard deviation of 20....

Answered: 1 week ago

Question

★★★★★

Thirsty Cactus Corp. just paid a dividend of $1.25 per share. The dividends are expected to grow at 40 percent for the next 9 years and then level off to a 5 percent growth rate indefinitely....

Answered: 1 week ago

Question

★★★★★

Samuel Ltd went into voluntary liquidation on 30 June 2018, its summarised statement of financial position then being: Liabilities and Equity Samuel Ltd Statement of Financial Position As at 30 June...

Answered: 1 week ago

Question

★★★★★

K For the plane curve, (a) graph the curve, and (b) find a rectangular equation for the curve. x=5 cott, y=2 csc t, for t in (0,) (a) Choose the correct graph below. A. OB. EXT -10 40 ETO X 10 X Q G...

Answered: 1 week ago

Question

★★★★★

The company ATAS is a producer of packaging. They have the following costs. Storage costs: 1,650,000/year Fixed costs: 8,000/year per truck Variable costs: 100/trip Every truck makes 150 trips per...

Answered: 1 week ago

Question

★★★★★

1) Split the hydro cost between fixed and variable components using the Hi-Low Method. State your answer as the equation of the line. 2) Use the equation to forecast electricity cost if we make...

Answered: 1 week ago

Question

★★★★★

Overall performance of Better Beauty, Inc was not good, one reason being that the company was missing its cost improvements target by substantial margins. One major Cost Improvement Program, known as...

Answered: 1 week ago

Previous Question Next Question