A manufacturing company developed a new type of hollow block that has a mean compressive strength of 8 kilograms with a standard deviation of 0.5 kilogram. A random sample of 50 Iblocks is tested and found to have a mean compressive strength of 7.8 kilograms. Use a 0.01 level of significance. Which of the following best contrádicts the null hypothesis, u = 8 The null hypothesis is:
A manufacturing company developed a new type of hollow block that has a mean compressive strength of 8 kilograms with a standard deviation of 0.5 kilogram. A random sample of 50 Iblocks is tested and found to have a mean compressive strength of 7.8 kilograms. Use a 0.01 level of significance. Which of the following best contrádicts the null hypothesis, u = 8 The null hypothesis is:
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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![[refer to the previous problem]
A manufacturing company developed a
new type of hollow block that has a
mean compressive strength of 8
kilograms with a standard deviation of
0.5 kilogram. A random sample of 50
Iblocks is tested and found to have a
mean compressive strength of 7.8
kilograms. Use a 0.01 level of
significance.
Which of the following best contrádicts
the null hypothesis, u = 8
The null hypothesis is:
O rejected
O accepted
no decision
O insufficient data](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb078d36-1a03-4398-a880-9b98ad67e670%2Fb0c769d5-53e3-4fbf-997c-1e9d514742a7%2F2b9v01_processed.png&w=3840&q=75)
Transcribed Image Text:[refer to the previous problem]
A manufacturing company developed a
new type of hollow block that has a
mean compressive strength of 8
kilograms with a standard deviation of
0.5 kilogram. A random sample of 50
Iblocks is tested and found to have a
mean compressive strength of 7.8
kilograms. Use a 0.01 level of
significance.
Which of the following best contrádicts
the null hypothesis, u = 8
The null hypothesis is:
O rejected
O accepted
no decision
O insufficient data
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