Question 1
1 out of 1 points
The Central Limit Theorem states:
Selected
Answer:
Correct
Answer:
The mean of a sampling distribution of means is equal to the
population mean.
The mean of a sampling distribution of means is equal to the
population mean.
Que
Question 1 - Analysis of Heart Rate
For fun a medical school professor once made a class of med students jump up and down for 1
minute and then measure their heart rate. Below are the values that were recorded:
136 144 99 145 135 125 115 127 124 101 100 1
Week 3 Assignment
1.
Using StatCrunch, calculate the chi-square statistic and degrees of freedom for the
following set of data for 300 people:
Had flu shot
Didnt have flu shot
Total
Group A
20
80
100
Group B
30
70
100
Group C
32
68
100
Total
82
218
300
Co
Week 3 Assignment
1.
Using StatCrunch, calculate the chi-square statistic and degrees of freedom for the
following set of data for 300 people:
Had flu shot
Didnt have flu shot
Total
Group A
20
80
100
Group B
30
70
100
Group C
32
68
100
Total
82
218
300
Co
Week 1 Assignment
1.
For each of the following (a through d), indicate which is a variable and which is a constant:
a.
The number of minutes in an hour (Constant)
b.
Systolic blood pressure (Variable)
c.
Blood type (Variable)
d.
The number of days in a we
Question 1
1 out of 1 points
Chi square test for independence compares observed frequencies with:
Selected
Answer:
Expected
frequencies
Correct
Answer:
Expected
frequencies
Question 2
1 out of 1 points
The degrees of freedom for a 3X4 contingency table ar
Using StatCrunch construct a Contingency table for the subject's poverty level (labeled poverty
in the data set) based on their working status (labeled worknow in the data set). Your figures
should look like figure 4.1 on page 61 of the Polit text. As you
Thedatacontainedwascollectedfrom1,000womenintheareaarounddowntownPhiladelphia.Runa
onesamplettestonthewomen'sstateofoptimismgiventhattheNationalnormonthistestforall
womenis50.0.
One sample T hypothesis test:
: Mean of variable
H0 : = 50
HA : 50
Hypothesi
Question 2: The two sample t test on shingles patients
A pilot study was conducted to evaluate the effectiveness of pain alleviation in patients with facial
shingles. 24 patients were randomly assigned to one of 2 treatment groups; rest vs. acupuncture. A