
Hypothesis Testing in Statistics

Interactive Video
•
Mathematics, Science
•
10th - 12th Grade
•
Hard

Amelia Wright
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the null hypothesis in the factory machine problem?
The average fluid dispensed is less than 80 ml.
The average fluid dispensed is more than 80 ml.
The average fluid dispensed is 80 ml.
The average fluid dispensed is not 80 ml.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a two-tail test used in the factory machine problem?
Because the null hypothesis states the mean is equal to 80.
Because the alternative hypothesis states the mean is not equal to 80.
Because the standard deviation is unknown.
Because the sample size is less than 30.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the critical Z value for a 95% confidence level?
2.33
1.96
2.58
1.64
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the null hypothesis in the car battery problem?
The average lifespan is exactly 2 years.
The average lifespan is equal to or greater than 2 years.
The average lifespan is more than 2 years.
The average lifespan is less than 2 years.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the alternative hypothesis in the car battery problem?
The average lifespan is less than 2 years.
The average lifespan is exactly 2 years.
The average lifespan is more than 2 years.
The average lifespan is equal to 2 years.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a T-test used in the car battery problem?
Because the sample mean is exactly 2 years.
Because the sample size is less than 30 and the population standard deviation is unknown.
Because the population standard deviation is known.
Because the sample size is greater than 30.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the calculated T value in the car battery problem?
-4.22
2.82
-2.82
4.22
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