4. Given u = 72, o = 6, n=45. 5. A population has mean 5.75 and standard deviation of 1.02. If a random sample of 81 are taken, find the mean and variance of the sample mean.
4. Given u = 72, o = 6, n=45. 5. A population has mean 5.75 and standard deviation of 1.02. If a random sample of 81 are taken, find the mean and variance of the sample mean.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
Related questions
Question
Please answer 4 and 5 already with the same format as given on the examples. Thank you!
Transcribed Image Text:Example 1. Given µ = 80, a = 20, n = 19. Find , Oi and
Example 2. Given µ = -10, o = 5, n = 500, find F andi
Solution:
Solution:
a. Solve for sample mean * :
i = µ =-10
A. Solve for sample mean: * = 4
Σ=μ= 80
b. Solving for variance
o? 5? 25
= 0.05
500 500
B. Solving for standard deviation: O:
20 20
- = 4.59
In V19 4.36
C. Solving for variance: ºi
20? 400
= 21.05
19
n
19
ACTIVITY: Find x¸ ºž andºi for the following.
1. Given u = 5.75, o = 1.02, n=81.
2. Given u = 128, o = 22, n=36.
3. Given u = 12, o = 1.5, n=90.
4. Given u = 72, o = 6, n=45.
5. A population has mean 5.75 and standard deviation of 1.02. If a random sample of 81 are taken, find the mean
and variance of the sample mean.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON