In certain country, 43% of the population has type A blood. Suppose 21 people from that country are randomly chosen. Find the probability that: (Round all probabilities to four decimal places.) (a) exactly five people have type A blood. (b) strictly more than eighteen people have type A blood. (c) at most sixteen people have type A blood. (d) between five and eighteen (inclusive) people have type A blood. (e) Also find the mean number of people out of 21 who have type A blood, and the standard deviation to two decimal places. f= σ=

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
In a certain country, 43% of the population has type A blood. Suppose 21 people from that country are randomly chosen. Find the probability that (round all probabilities to four decimal places):

(a) Exactly five people have type A blood.  
[Probability box]

(b) Strictly more than eighteen people have type A blood.  
[Probability box]

(c) At most sixteen people have type A blood.  
[Probability box]

(d) Between five and eighteen (inclusive) people have type A blood.  
[Probability box]

(e) Also find the mean number of people out of 21 who have type A blood, and the standard deviation to two decimal places.  
Mean (\(\mu\) = [Mean box])  
Standard Deviation (\(\sigma\) = [Standard deviation box])
Transcribed Image Text:In a certain country, 43% of the population has type A blood. Suppose 21 people from that country are randomly chosen. Find the probability that (round all probabilities to four decimal places): (a) Exactly five people have type A blood. [Probability box] (b) Strictly more than eighteen people have type A blood. [Probability box] (c) At most sixteen people have type A blood. [Probability box] (d) Between five and eighteen (inclusive) people have type A blood. [Probability box] (e) Also find the mean number of people out of 21 who have type A blood, and the standard deviation to two decimal places. Mean (\(\mu\) = [Mean box]) Standard Deviation (\(\sigma\) = [Standard deviation box])
Expert Solution
Step 1

Givenp=0.43n=21Let "x" be no.of people have type A bloodx~Binomial(n=21,p=0.43)P(X=x)=(nx)×px×(1-p)n-x   ; x=0,1,..,n

steps

Step by step

Solved in 6 steps

Blurred answer
Similar questions
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