Question

- Please list all the two sample hypotheses tests that you can do. Assume the samples are independent: (3-Points)?

- Please explain what a type 1 error and type 2 error is and give an example of both (4):

- What is the difference between a paired sample and an independent sample? Please provide an example of both. (3)

Answer #1

two mean t test

two mean z test

two proportion test

....................

a type I error is the rejection of a true null hypothesis,

while a type II error is the non-rejection of a false null hypothesis.

............

**Paired**-**samples** t tests compare
scores on two different variables but for the same group of
cases;

**independent**-**samples** t tests
compare scores on the same variable but for two different groups of
cases.

...................

THANKS

revert back for doubt

please upvote

1) What is the difference between a paired sample and a
independent sample? Please provide an example of both. (3)

Question:
Please indicate if the following are independent or paired samples
of t-tests:
a) Attitudes of 8th graders toward art before and after visiting a
museum on a field trip
b) Differences in political opinions of father and sons
c) Differences in rates of attendance at Rutgers football games for
students raised in New Jersey and those raised
in Pennsylvania
d) Differences between freshman and sophomores in the class on time
spent studying
e) A comparison between education levels of the...

For all hypothesis tests, be sure to include information
for all 7 steps. For any two-sample or paired t-tests that you
perform, in Step 6, show the decision rule based on BOTH the
critical value and the p-value. Use the online app for the
t-distribution to compute your p-values.
1. Cortisol level determinations were made on
two samples of women at childbirth. Group 1 subjects underwent
emergency cesarean section following induced labor. Group 2
subjects delivered by either cesarean section...

If in a two-tailed, two-sample test of proportions for
independent samples, we fail to reject the null hypotheses, then we
can conclude that
Multiple Choice
a difference exists between the population proportions.
we have no evidence that a difference exists between the
population proportions.
the difference between sample proportions is definitely
zero.
the difference between the population proportions is 1.

1. When researchers conclude that their hypotheses are supported
based on samples, when in reality the hypotheses are not true of
the populations, the researchers have made __________________.
critical value errors
Type IV errors
Type II errors
2. Statisticians do not rely on the results of one study; thus,
_____________ is central to the connection between research and
understanding.
correlation
power
error variance
replication
3. Anna has conducted a study to test the hypothesis that fear
correlates to the number...

Consider a research situation involving two independent samples,
Sample A and Sample B. (Assume that you are subtracting the Mean of
Sample B from the Mean of Sample A.) Mean of Sample A = 30.45 n =
25 Mean of Sample B = 26.54 n = 27 Estimate of the standard error
of the difference of means (s _ _ ) = 2.15. Assume that you’re
working at the .05 level of significance.x1−x2
a. Formulate an appropriate null hypothesis.
b....

Consider the set {1,2,3,4}.
a) make a list of all samples of size 2 that can be drawn from
this set of integers( Sample with replacement; that is, the first
number is drawn, observed, and then replaced [returned to the
sample set] before the next drawing)
b) construct the sampling distribution of sample means for
samples of size 2 selected from this set. Provide the distribution
both in the form of a table and histogram.
c) Find μX and
σX

1. Assume you have two independent samples having the same
sample size. If the variance for the first sample is 50 and the
variance for the second sample is 40, then the pooled variance for
these two samples is 45.
True /False
2.
An F test for the equality of two population variances can be a
two-tailed test or a one-tailed test.
True
False
3.
A Chi-Square test is often used to determine if there is a
significant relationship between...

For the following experiment/question, pick the most appropriate
statistical test. You have the following statistical tests as
choices: some may be used more than once, others not at
all. Assume homogeneity of variance (where
applicable) and the validity of parametric tests (where
applicable), unless something is directly stated (e.g., “the data
are not at all normal”) or otherwise indicated (viz., by the
inspection of the data) which would indicate a strong and obvious
violation of an assumption. This means you must...

For the following experiment/question, pick the most appropriate
statistical test. You have the following statistical tests as
choices: some may be used more than once, others not at
all. Assume homogeneity of variance (where
applicable) and the validity of parametric tests (where
applicable), unless something is directly stated (e.g., “the data
are not at all normal”) or otherwise indicated (viz., by the
inspection of the data) which would indicate a strong and obvious
violation of an assumption. This means you must...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 22 seconds ago

asked 10 minutes ago

asked 13 minutes ago

asked 17 minutes ago

asked 26 minutes ago

asked 40 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