The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 n1 = 50 N₂ = = 30 x 1 = I 13.8 I = 11.4 01 = 2.2 a. What is the point estimate of the difference between the two population means? (to 1 decimal) X2 02= 3.2 2.4 b. Provide a 90% confidence interval for the difference between the two population means (to decimals). ( c. Provide a 95% confidence interval for the difference between the two population means (to decimals).
The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 n1 = 50 N₂ = = 30 x 1 = I 13.8 I = 11.4 01 = 2.2 a. What is the point estimate of the difference between the two population means? (to 1 decimal) X2 02= 3.2 2.4 b. Provide a 90% confidence interval for the difference between the two population means (to decimals). ( c. Provide a 95% confidence interval for the difference between the two population means (to decimals).
MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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
Transcribed Image Text:Exercise 10.01 Algo (Inferences About the Difference Between Two
Population Means: Sigmas Known)
The following results come from two independent random samples taken of two populations.
Sample 1
Sample 2
n1 50
n2 30
x 1
Icon Key
=
I
= 13.8
)
=
◄ Question 2 of 2
11.4
X2
01 = = 2.2
02 = 3.2
a. What is the point estimate of the difference between the two population means? (to 1
decimal)
Hint(s) Check My Work
2.4
b. Provide a 90% confidence interval for the difference between the two population means (to 2
decimals).
)
c. Provide a 95% confidence interval for the difference between the two population means (to 2
decimals).
Hint(s) Check My Work
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