A random sample of 50 bags of white Cheddar popcorn weighed, on average, 5.35 ounces with a standard deviation of 0.30 ounces. Test the hypothesis that mu = 5.5 ounces against the alternative hypothesis, mu < 5.5 ounces at the 0.025 level of significance. Test of hypothesis needed like in the pic
A random sample of 50 bags of white Cheddar popcorn weighed, on average, 5.35 ounces with a standard deviation of 0.30 ounces. Test the hypothesis that mu = 5.5 ounces against the alternative hypothesis, mu < 5.5 ounces at the 0.025 level of significance. Test of hypothesis needed like in the pic
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
A random sample of 50 bags of white Cheddar popcorn weighed, on average, 5.35 ounces with a standard deviation of 0.30 ounces. Test the hypothesis that mu = 5.5 ounces against the alternative hypothesis, mu < 5.5 ounces at the 0.025 level of significance.
Test of hypothesis needed like in the pic
![1.
Ho u = 45, there is no increase in copies
> 45, there is an increase in copies
H,
2.
a = 0.05
3.
One tailed test
4.
Critical region t = +2.92, df = 2
5.
Test Statistic
47-45
T =
= 3.47
www.com
1 √3
6.
Decision: Reject Ho
7.
Conclusion: The increase in copies in our samples is statistically
significant. It is not the result of chance of variation.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd30bd586-84d2-4106-8a1c-fe3455cd62d0%2Ff719bef9-5892-4986-8416-b7fd1b13953c%2Ft4isde_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1.
Ho u = 45, there is no increase in copies
> 45, there is an increase in copies
H,
2.
a = 0.05
3.
One tailed test
4.
Critical region t = +2.92, df = 2
5.
Test Statistic
47-45
T =
= 3.47
www.com
1 √3
6.
Decision: Reject Ho
7.
Conclusion: The increase in copies in our samples is statistically
significant. It is not the result of chance of variation.
![A certain printing press is known to turn out an average of
45 copies a minute. In an attempt to increase its output,
an alteration is made to the machine, and then in 3 short
test runs it turns out 46, 47, and 48 copies a minute. Is
this increase statically significant, or is it likely to be
simply the result of chance of variation? Use a significance
level of 0.05](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd30bd586-84d2-4106-8a1c-fe3455cd62d0%2Ff719bef9-5892-4986-8416-b7fd1b13953c%2Fajf4hu6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A certain printing press is known to turn out an average of
45 copies a minute. In an attempt to increase its output,
an alteration is made to the machine, and then in 3 short
test runs it turns out 46, 47, and 48 copies a minute. Is
this increase statically significant, or is it likely to be
simply the result of chance of variation? Use a significance
level of 0.05
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