What is the primary goal of hypothesis testing?
R Programming for Statistics and Data Science - Test for the Mean - Population Variance Unknown

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Mathematics
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10th - 12th Grade
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To confirm the alternative hypothesis
To reject the null hypothesis
To prove the null hypothesis
To calculate the mean
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the null hypothesis in the email open rate scenario?
The competitor's open rate is not measurable
The competitor's open rate is greater than 40%
The competitor's open rate is less than or equal to 40%
The competitor's open rate is exactly 40%
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance level used in the email open rate test?
0.10
0.50
0.05
0.01
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the T-statistic used instead of the Z-score in this scenario?
Because the population variance is known
Because the sample size is large
Because the data is not normally distributed
Because the population variance is unknown and the sample size is small
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of degrees of freedom in the T-distribution?
They adjust the critical value based on sample size
They determine the sample size
They are used to calculate the mean
They are irrelevant in hypothesis testing
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a P-value greater than the significance level indicate?
The test is inconclusive
The null hypothesis is rejected
The alternative hypothesis is accepted
The null hypothesis cannot be rejected
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the decision rule for the T-statistic in hypothesis testing?
Accept the null hypothesis if the T-score is higher than the critical value
Accept the null hypothesis if the T-score is lower than the critical value
Reject the null hypothesis if the T-score is lower than the critical value
Reject the null hypothesis if the T-score is higher than the critical value
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