Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

please help AP Statistics - Quiz - Q1. The random variable X is approximately Normally distributed with a mean of 24 and a standard deviation

please help

image text in transcribed
AP Statistics - Quiz - Q1. The random variable X is approximately Normally distributed with a mean of 24 and a standard deviation of 5.1. Find the probability that X is at least equal 18.8. Please show work. A. Draw a picture (Normal Curve). Put the X values and the Z values on the curve, or draw two curves (one for X and one for Z). B. Write the probability statements in terms of X and Z. Provide the answer to four decimal places. Q2. The random variable X is the amount of money that a randomly selected adult has in his/her possession. X is rounded to the nearest ten dollars. X 10 20 30 P(X) 0.10 40 50 0.20 0.15 0.25 0.20 0.10 A. What is the mean or expected value of X? Interpret this value in context? B. What is the standard deviation of X? Interpret this value in context

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

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

Step: 2

blur-text-image_2

Step: 3

blur-text-image_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

Making Hard Decisions with decision tools

Authors: Robert Clemen, Terence Reilly

3rd edition

538797576, 978-0538797573

More Books

Students also viewed these Mathematics questions