Question

A doctor hypothesizes that females have higher systolic blood
pressure than males. The doctor obtains the blood pressure from a
sample of patients during their annual check-up. Below is the
systolic blood pressure for the sample. What can be concluded with
α = 0.05?

male |
female |

106 119 98 105 100 132 109 113 98 105 |
137 105 119 115 127 122 131 124 111 136 |

**a)** What is the appropriate test statistic?

---Select--- na z-test One-Sample t-test Independent-Samples t-test
Related-Samples t-test

**b)**

Condition 1:

---Select--- doctor females sex systolic blood pressure males

Condition 2:

---Select--- doctor females sex systolic blood pressure males

**c)** Obtain/compute the appropriate values to make a
decision about *H*_{0}.

(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)

critical value = ; test statistic =

Decision: ---Select--- Reject H0 Fail to reject H0

**d)** If appropriate, compute the CI. If not
appropriate, input "na" for both spaces below.

[ , ]

**e)** Compute the corresponding effect size(s) and
indicate magnitude(s).

If not appropriate, input and/or select "na" below.

*d* = ; ---Select--- na trivial effect
small effect medium effect large effect

*r*^{2} = ; ---Select--- na
trivial effect small effect medium effect large effect

**f)** Make an interpretation based on the
results.

The males have significantly higher systolic blood pressure than the females.

The females have significantly higher systolic blood pressure than the males.

There is no significant systolic blood pressure difference among sexes.

Answer #1

Application Exercise:
A physician hypothesizes that males have higher systolic blood
pressure than females. The physician obtains a sample of patients
and measures their blood pressures during their regular check-up.
Below is the systolic blood pressure for the sample. What can the
physician conclude with α = 0.01?
male
female
106
119
98
105
100
132
109
113
98
105
137
115
119
115
127
122
131
124
111
136
a) What is the appropriate test statistic?
---Select--- na z-test...

It is generally accepted that patients grow anxious when a
person with a white coat and stethoscope walks into an examining
room; i.e., patients have white coat hypertension. A family
practitioner is curious about this. To test this, the practitioner
has colleagues from the practice randomly visit patients in a white
coat or non-white sport coat, and measure their blood pressure.
What can the practitioner conclude with an α of 0.01? Below are the
systolic blood pressures of the patients....

The mean height of adult males in the U.S is about 68.2" with a
variance of 16.00". Suppose the mean height of a sample of 30
mentally disabled males was found to be 69.6". Researchers want to
know if the height of mentally disabled males differs from the
population. What can be concluded with α = 0.01?
a) What is the appropriate test statistic?
---Select from the options--- na z-test, one-sample t-test,
independent-samples t-test, related-samples t-test
b)
Population:
---Select from...

Researchers hypothesize that a new oral contraceptive will
produce weight loss. In a study, healthy females were weighed (lb)
at the beginning of a course of the new oral contraceptive. They
were reweighed at 2 months. What can the researchers conclude with
an α of 0.01? The data are below.
initial weight
2-month weight
140
141
137
130
140
158
147
145
148
140
150
119
144
141
144
163
146
145
151
144
a) What is the appropriate test...

Researchers hypothesize that a new oral contraceptive will
produce weight gain. In a study, healthy females were weighed (lb)
at the beginning of a course of the new oral contraceptive. They
were reweighed at 3 months. What can the researchers conclude with
an α of 0.01? The data are below.
initial weight
3-month weight
140
117
137
130
140
158
147
145
141
140
150
119
144
141
144
163
146
145
151
144
a) What is the appropriate test...

A developmental psychologist hypothesizes that drinking soda
effects the hyperactivity of children. Children in the experimental
condition were given a can of soda during their afternoon break.
Children in the control condition were not given any soda. The
hyperactivity of the children was measured after the break. Below
are partial SPSS results:
a) Compute the appropriate test statistic(s) to
make a decision about H0.
(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)...

A political scientist hypothesizes that a political ad will
reduce attitudes about a particular issue. The scientist randomly
asks 31 individuals walking by to see the ad and then take a quiz
on the issue. The general public that knows little to nothing about
the issue, on average, scores 50 on the quiz. The individuals that
saw the ad scored an average of 53.59 with a variance of 25.70.
What can the political scientist conclude with an α of 0.05?...

Application Exercise:
In a fast food company, all male employees with 3 to 5 years of
experience have an average salary of $27900 with a with a standard
deviation of $5090. A random sample of 27 female employees also
having 3 to 5 years of experience had an average salary of $27200.
The company accountant suspects a different in salary practices for
males and females. What can be concluded with an α of
0.10?
a) What is the appropriate test...

A sample obese adult males were randomly divided into two groups
in a lifestyle change program. In the experimental group,
participants were involved in a vigorous 20-minute-per-day exercise
program and also given instructions on the importance of diet. The
control group only received the diet instructions. The hospital
administrators predict that exercise plus diet instruction will
reduce LDL cholesterol levels. Below are the LDL cholesterol data
after two months in the program. What can be concluded with α =
0.10?...

Use SPSS for this Application Exercise:
A nurse at a health clinic hypothesizes that ear thermometers
measure lower body temperature than oral thermometers. The nurse
selects a sample of healthy staff members and took the temperature
of each with both thermometers. The temperature data are below.
What can the nurse conclude with an α of 0.01?
ear
oral
97.8
98.6
98.9
97.9
99.1
98.2
97.4
97.3
96.3
97.4
98.1
97.7
b)
Condition 1:
---Select--- staff members oral thermometer ear thermometer...

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