Question

What should one take into consideration when testing the null hypothesis of the equality of two means using small samples?

Answer #1

when testing the means of independent samples, the null
hypothesis is best thought of as
a. the mean of a population 1 is equal to the mean of population
2
b. the mean of population 1 is unequal to the mean of population
2
c. the mean of a set of difference scores is equal to 0
d. the two population means don't differ by more than 10
points

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...

16. a. When testing the significance of the regression
coefficient, what is the null hypothesis?
b. When testing the significance of the regression coefficient,
what is the alternative hypothesis?

5. Two researchers are testing the null hypothesis that a
population proportion p is equal to 0.30, and the alternative
hypothesis that π = 0.30. Both take samples of 100 observations.
Researcher A finds a sample proportion of 0.29, and Researcher B
finds a sample proportion of 0.34. For which researcher will the
p-value of the test be smaller?
a: Explain without actually doing any computations.

In a hypothesis testing problem, the decision as to whether the
null hypothesis should be rejected or not can be made by comparing
the level of significance and the observed level of significance.
The null hypothesis should be rejected if:
A) the level of significance is bigger than the (nonzero)
observed level of significance
B) the level of significance is equal to one half of the
(nonzero) observed level of significance
C) the level of significance is smaller than the...

1. Which statement is incorrect?
A. The null hypothesis contains the equality sign
B. When a false null hypothesis is not rejected, a Type II error
has occurred
C. If the null hypothesis is rejected, it is concluded that the
alternative hypothesis is true
D. If we reject the null hypothesis, we cannot commit Type I
error
2. When carrying out a large sample test of H0: μ ≤ 10
vs. Ha: μ > 10 by using a critical value...

Which of the following statements is true if when using null
hypothesis testing, our p value (in the “sig” column of SPSS
output) is 0.063?
Fail to reject the null hypothesis
Reject the null hypothesis
Cannot determine with the information provided
What graph type is most appropriate for a Chi Square Test of
Independence?
line chart
box plot
bar graph (# cases or count with no error bars)
clustered bar graph (# cases or count with no error bars)
Which...

You want to test a hypothesis about equality of two variances.
What test statistic should you use?

Using the traditional hypothesis testing approach, calculate the
critical value for testing the null hypothesis that the population
mean is greater than or equal to 8, given a sample
size of 32, a population standard deviation
3.63, and a significance level of
0.05.
K =
Round to two decimals.

When testing the null hypothesis H0: E(Y)= μY,0 the appropriate
t statistic has approximately a standard normal distribution in
large samples if the null hypothesis is true. In a small sample,
the same t statistic has a Student's t distribution with n−1
degrees of freedom under what additional assumption? and explain
why
1) The distribution of Y is normal
2) The distribution of Y is Student's t with 1 degree of
freedom
3) The distribution of Y is Student's t...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 31 minutes ago

asked 33 minutes ago

asked 46 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago