Homework Help is Here – Start Your Trial Now!
Math
Statistics
a) b) c) d) Exactly 90 people say they use the Internet. At least 90 people say they use the Internet. That fewer than 90 people say they use the Internet. Are any of the probabilities in parts (a) and (c) unusua

a) b) c) d) Exactly 90 people say they use the Internet. At least 90 people say they use the Internet. That fewer than 90 people say they use the Internet. Are any of the probabilities in parts (a) and (c) unusua

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Please answer C and D using EXCEL: 

A survey of US adults ages 18-29 found that 93% use the Internet. You randomly select 100 adults ages 18-29 and ask them if they use the Internet. Find the probability that: a) b) c) d) Exactly 90 people say they use the Internet. At least 90 people say they use the Internet. That fewer than 90 people say they use the Internet. Are any of the probabilities in parts (a) and (c) unusual?
Transcribed Image Text:A survey of US adults ages 18-29 found that 93% use the Internet. You randomly select 100 adults ages 18-29 and ask them if they use the Internet. Find the probability that: a) b) c) d) Exactly 90 people say they use the Internet. At least 90 people say they use the Internet. That fewer than 90 people say they use the Internet. Are any of the probabilities in parts (a) and (c) unusual?
Expert Solution
Step 1

Given the information

n= 100

p=93%

p= 0.93

Let X be the number of people use the Internet

X follows the Binomial Distribution  with parameter n=100 & p = 0.93

We can find the probability by using the Binomial distribution in Excel.

a) We have to find the probability that exactly 90 people say use the Internet.

  we can write it in symbol as    P(X=90).

we can use the command 

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS