Question

No data required. Enter in the inferential test that should be
run to answer the research question: Z-Test, One-Sample t-Test,
Independent t-Test, Paired t-Test, or ANOVA (NOTE: not all tests
may be used in this assignment. Read the questions
carefully.).

Write your Null and Alternative Hypothesis as a full
sentence.

1. Is there a difference in the ages of people based on the
amount of time they work per week?

Inferential Test:

Null Hypothesis (H0):

Alternative Hypothesis (H1):

Should the Null Hypothesis be accepted or Rejected?:

Write your conclusions including information on the Test of
Homogeneity, if necessary, and the proper notation in
parentheses:

2. What does test proportion mean? Is that Z test?

Answer #1

Q1. The test used to test the claim that is there a difference in the ages of people based on the amount of time they work per week is ANOVA test.

Null Hypothesis(H0): There is no significant difference in the ages of people based on the mean amount of time they work per week.

Alternative Hypothesis(H1): There is a significant difference in the ages of people based on the mean amount of time they work per week. That is the mean amount of time they work per week is different for at least one age group.

We reject the null hypothesis when:

or Pvalue is less than the given value of alpha.

To perform the ANOVA test the assumption of Homogeneity of variance is necessary.

Q2. The test of proportion is the type of data in which we are testing whether the population satisfied certain characteristics.

The hypothesis test for proportion determines whether the proportion of observed sample satisfy the given population proportion for certain characteristics.

Lets considers an example, we want to test the claim that the proportion of students in US who says that Statistics is an useful subject for determining their career is 30%. A random sample of 500 student is taken and find that 235 student say that Statistics is an useful subject for determining their career. So we can used the test of proportion.

The test used for testing the proportion is Z test.

Enter the hypothetical data below in SPSS to use for the
assignment. The SPSS commands: 'file', 'new', 'data' will create a
spreadsheet in which to enter the data below (manually).
Case Group
Test
1
1
6
2
1
7
3
1
5
4
1
4
5
1
1
6
2
3
7
2
5
8
2
2
9
2
5
10
2
1
The groups are coded as follows: 1=experimental group, 2 control
group. The participants in the experimental...

A t-test is generally used to analyze data with _____
level(s), and an ANOVA is generally used to analyze data with _____
level(s).
a.
less than two; more than two
b.
one; one or more
c.
two; more than two
d.
more than two; two
If you examined the effect of studying 0, 1, or 2 hours a day on
grades, how would you write
the null hypothesis?
a.
µD = 0
b. ...

Research is an integral part of all professional fields.
Designing a research study can be a complicated task that can be
simplified if the appropriate techniques can be identified. This
assignment will give you the opportunity to design an experiment,
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results you hope to see. Working from the topic chosen earlier in
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6. A researcher wishes to test the effect of early discharge of
cardiac patients on their ability to cope at home. The researcher
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discharged early and 10 patients who stayed in the hospital for a
longer period of time. Higher scores indicate better coping. Based
on the data given in the table below, can you conclude that early
discharge has an effect on cardiac patients’ on ability to cope at...

For each of the single sample t-tests below (problem 1-3),
please include:
1) The null and alternative hypotheses (can be written in notation
or as a sentence)
2) Calculate (show all work):
a) The estimated population variance
b) The variance of the distribution of means
c) The standard deviation of the distribution of means
3) Degrees of freedom
4) The cutoff sample score on the comparison distribution at which
the null hypothesis
should be rejected (cutoff scores)
5) The sample’s...

Significane Level of a=0.05 is used for each hypothesis
test and a confidence level of 95% is used for each confidence
interval estimate.
A random sample of people who work regular 9-5 hours and a
random sample of people who work shifts were asked how many hours
of sleep they get per day on average. An appropriate F-Test was
performed and it was found that the null hypothesis of the F-Test
should be rejected. Can we infer that there is...

What is the F-critical value for a one-tail F-test if the
numerator sample size is 21 (n1) and the denominator
sample size is 16 (n2); use level of significance (α)
0.05.
Select one:
a. 3.37
b. -3.99
c. 2.33
d. 3
To test the effectiveness of a business school preparation
course, 8 students took a general business test before and after
the course. The results are given below.
Exam
Score
Exam Score
Student Before Course
(1) After Course (2)...

1. A null hypothesis states that there is
A. No significant difference between a population parameter and
sample statistic.
B. A significant difference between a population parameter and
sample statistic.
C. The difference between the population parameter and sample
statistic is significant and can be attributed to sampling
error.
D. The difference between the population parameter and sample
statistic is insignificant and cannot be attributed to sampling
error.
E. None of the above
2. An alternative hypothesis states that there...

Questions 14-18 are based on Scenario 4. A
researcher is interested in studying how exposure to blue spectrum
light (the light emitted from smartphones and other technology
devices) can influence sleep quality. She randomly assigns one
group of participants to use no technology before bed for 1 week,
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For each of the following scenarios, identify:
the population of interest,
the outcome variable being measured on each observational
unit,
whether the outcome variable being measured is categorical
or quantitative/Continuous,
the parameter of interest, define both in words and using the
appropriate statistical symbol (π, π1 -π2, µ, µ1 - µ2, or µd),
and
the null and alternative hypotheses, written in correct
statistical notation (not in words)
Name the hypothesis test you would use. For example, some tests
we have...

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