Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

I got stuck between c-g Suppose that the amount of time that students spend studying in the library in one sitting is normally distributed with

I got stuck between c-g

image text in transcribed
Suppose that the amount of time that students spend studying in the library in one sitting is normally distributed with mean 42 minutes and standard deviation 21 minutes. A researcher observed 9 students who entered the library to study. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 42 21 b. What is the distribution of a? a - N( 42 7 c. What is the distribution of No d. If one randomly selected student is timed, find the probability that this student's time will be between 40 and 51 minutes. e. For the 9 students, find the probability that their average time studying is between 40 and 51 minutes. f. Find the probability that the randomly selected 9 students will have a total study time less than 423 minutes. g. For part e) and f), is the assumption of normal necessary? O NoO Yes h. The top 15% of the total study time for groups of 9 students will be given a sticker that says "Great dedication". What is the least total time that a group can study and still receive a sticker? minutes

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

Step: 3

blur-text-image

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

Combinatorial Geometry In The Plane

Authors: Hugo Hadwiger, Hans Debrunner, Victor Klee

1st Edition

048679993X, 9780486799933

More Books

Students also viewed these Mathematics questions

Question

Explain the goal of behavior therapy.

Answered: 1 week ago

Question

Discuss and describe systems theory.

Answered: 1 week ago

Question

2. To store it and

Answered: 1 week ago