At the Blood Bank, they know that O+ blood is the most common blood type and that 40% of the people are known to have 0+blood. Blood type A-is a very scarce blood type and only 6% of the people have A-blood. Half of the people have blood type A or B. Let: X = number of people who have blood type O+ Y = number of people who have blood type A- Z = number of people who have blood type A or B a) Consider a random sample of n = 12 people who donated blood over the past three months. The expected number of people with blood type O+is and the expected number of people with blood type A- is Round your answers to 2 decimal places. Calculate the following probabilities: P(X = 9) = Round your answer to 4 decimal places. P(X > 3) = Round your answer to 4 decimal places.

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
At the Blood Bank, they know that O+ blood is the most common blood type and that 40% of the people are known to have O+ blood. Blood type A- is a
very scarce blood type and only 6% of the people have A- blood. Half of the people have blood type A or B.
Let:
X = number of people who have blood type O+
Y = number of people who have blood type A-
Z = number of people who have blood type A or B
a)
Consider a random sample of n
= 12 people who donated blood over the past three months.
The expected number of people with blood type O+is
and the expected number of people with blood type A- is
Round your answers to 2 decimal places.
Calculate the following probabilities:
o P(X = 9) =
Round your answer to 4 decimal places.
P(X > 3)
Round your answer to 4 decimal places.
|
Transcribed Image Text:At the Blood Bank, they know that O+ blood is the most common blood type and that 40% of the people are known to have O+ blood. Blood type A- is a very scarce blood type and only 6% of the people have A- blood. Half of the people have blood type A or B. Let: X = number of people who have blood type O+ Y = number of people who have blood type A- Z = number of people who have blood type A or B a) Consider a random sample of n = 12 people who donated blood over the past three months. The expected number of people with blood type O+is and the expected number of people with blood type A- is Round your answers to 2 decimal places. Calculate the following probabilities: o P(X = 9) = Round your answer to 4 decimal places. P(X > 3) Round your answer to 4 decimal places. |
b)
Consider a random sample of n
42 people who donated blood over the past three months.
Use the relevant probability function of Y to calculate the probability that 5 people in the random sample will have type A-blood.
Round your answer to 4 decimal places.
c)
Consider a random sample of n =
28 people who donated blood over the past three months.
The standard deviation of Z is:
Round your answer to 4 decimal places.
The distribution of Z is: (Choose all the applicable options, marks will be deducted for incorrect choices.)
O Skew to the left
O Symmetric
O Discrete
O Continuous
O Skew to the right
O Binary
Transcribed Image Text:b) Consider a random sample of n 42 people who donated blood over the past three months. Use the relevant probability function of Y to calculate the probability that 5 people in the random sample will have type A-blood. Round your answer to 4 decimal places. c) Consider a random sample of n = 28 people who donated blood over the past three months. The standard deviation of Z is: Round your answer to 4 decimal places. The distribution of Z is: (Choose all the applicable options, marks will be deducted for incorrect choices.) O Skew to the left O Symmetric O Discrete O Continuous O Skew to the right O Binary
Expert Solution
steps

Step by step

Solved in 4 steps with 3 images

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