Question

Describe to your colleague how to make a decision about the null hypothesis (retain or reject) based on critical and calculated value

Answer #1

The primary purpose of hypothesis testing is to attempt to
reject the null hypothesis not to accept the alternative
hypothesis.
True
False
In hypothesis testing, a Type 1 error is
failing to reject the null hypothesis when it is true.
failing to reject the null hypothesis when it is false.
rejecting the null hypothesis when it is true.
rejecting the null hypothesis when it is false.
In general, the power of a statistical test is the probability
that a test...

What is the decision at a 0.05 level of significance for each of
the following tests? Hint: Find the critical value for each test;
then make a decision. (Round your critical values to two decimal
places.)
Part (a) F(3, 26) = 3.04
Fcrit =
Retain the null hypothesis.
Reject the null hypothesis.
Part (b) F(5, 15) = 2.73
Fcrit =
Retain the null hypothesis.
Reject the null hypothesis.
Part (c) F(2, 13) = 3.71
Fcrit =
Retain the null hypothesis....

What is the decision at a 0.05 level of significance for each of
the following tests? Hint: Find the critical value for each test;
then make a decision. (Round your critical values to two decimal
places.) Part (a) F(3, 25) = 3.03 Fcrit = Retain the null
hypothesis. Reject the null hypothesis. Part (b) F(5, 22) = 2.47
Fcrit = Retain the null hypothesis. Reject the null hypothesis.
Part (c) F(4, 35) = 2.71 Fcrit = Retain the null hypothesis....

What is the decision at a 0.05 level of significance for each of
the following tests? Hint: Find the critical value for each test;
then make a decision. (Round your critical values to two decimal
places.) Part (a) F(3, 27) = 3.00 Fcrit = Retain or reject the null
hypothesis. Part (b) F(5, 17) = 2.61 Fcrit = retain or reject the
null hypothesis Part (c) F(4, 36) = 2.70 Fcrit = retain or reject
the null hypothesis Part (D)...

You have made the decision to reject your null hypothesis. Which
of the following statements is TRUE regarding your results?
Your results are NOT statistically significant.
Your results are due to sampling variability.
Your results can't be interpreted.
Your results are statistically significant.

Indicate whether the following statement is true or false.
If we do not reject the null hypothesis, it is possible we have
made both type I and type II errors.
In an upper tail hypothesis test for the mean, the critical
value is 2.575 and the test statistic is 2.5. In this case, the
null hypothesis should not be rejected.
The calculated p-value should be divided by 2 to make the
decision for a two tail test.
The sampling error...

Decide on a null hypothesis and a testable research hypothesis.
Then you will be shown some data including some descriptive
statistics and an associated probability value. Based on those
data, make a decision whether or not to reject the null hypothesis.
Make sure you state why you made your decision
Are women with tattoos rated as lower in intelligence
than women without tattoos?
State the NULL HYPOTHESIS
State the ALTERNATIVE HYPOTHESIS
Data were collected and results showed…
Intelligence scores
for...

For each p value stated below, what is the decision for each if
α = 0.05? What is the decision for each if α = 0.01?
Part (a) For p = 0.1500, what is the decision if α = 0.05?
Retain the null hypothesis. Reject the null hypothesis. For p =
0.1500, what is the decision if α = 0.01? Retain the null
hypothesis. Reject the null hypothesis.
Part (b) For p = 0.0020, what is the decision if α...

What is the decision at a 0.05 level of significance for each
of the following tests? Hint: Find the critical value for
each test; then make a decision. (Round your critical values to two
decimal places.)
Part (a)
F(3, 28) = 2.98
Fcrit =
Retain the null hypothesis.Reject the null
hypothesis.
Part (b)
F(5, 20) = 2.46
Fcrit =
Retain the null hypothesis.Reject the null
hypothesis.
Part (c)
F(4, 34) = 2.72
Fcrit =
Retain the null hypothesis.Reject the null...

Is it possible to reject the null hypothesis AND reject the
alternative hypothesis?
If the alternative hypothesis is: "There is a strong positive
correlation between quality of sleep and academic success" and I
find that the correlation coefficient is .39 (not strong) what
would the null hypothesis be, and would I accept that. The sample
size is 60 and the p value is below my level of significance of
.05

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