Question

You are trying to determine if there is a significant difference in the mean age between patients who have developed a nosocomial infection while admitted to your adult surgical unit, your adult medical unit and your cardiac ICU. What would be an appropriate test to use?

Chi-square

T-test for independent groups

ANOVA

Repeat measures ANOVA

Answer #1

T-test for independent groups

You are trying to determine if there is a significant difference
in the mean Glasgow coma scale score for patients who are seen with
a head injury during the day, evening and night shifts in your
emergency room. Your ANOVA results have an F value of 22.33 and a p
value of <0.01. You know this means:
There is a significant difference in the mean Glasgow coma scale
score for patients seen with a head injury on the three different...

A researcher is interested in whether there is a significant
difference between the mean age of marriage across three racial
groups. Based on the data below, answer these questions.
Race
N
Mean
Black
118
21.57
White
882
24.59
Other
120
28.39
All Groups
1,120
24.68
1. Calculate the value of the between group sum of squares (SSB,
20 pts).
Race
Y bar for each group
Total mean
Group mean – Total mean
Square of the difference
The number of cases...

2a.) You want to know if people's age (in years) is related to
the amount of time they spend on social media (hours per week). You
collect a sample of 200, and measure both variables. What kind of
statistical test does this call for?
ANOVA
Independent Samples t-test
Correlation
Chi-square for independence
Single Mean
Dependent Samples t-test
Chi-square for goodness of fit
2b.) Then Imagine you have conducted the appropriate test for
the above design, with α = .05 and...

A researcher is trying to determine whether there is a
difference in the number of new friends that students make during
their freshman year based on whether they live on or off campus.
The descriptive statistics for the two groups are presented below.
Conduct the appropriate hypothesis test to determine whether there
is a significant difference in the number of new friends made.
On-Campus Freshmen
Off-Campus Freshmen
X1 = 4.48 s1 =1.81 N1 =16
X2 =3.61 s2 =1.86 N2 =16...

1a.) You want to know if there are generational differences in
concern regarding environmental sustainability. You administer a
survey (0-50 scale) to 100 traditional college age students (aged
18-23) and their parents, and compare average levels of concern
between the two groups (children vs. parents). What kind of
statistical test does this call for?
Correlation
ANOVA
Chi-square for independence
Chi-square for goodness of fit
Independent Samples t-test
Single Mean
Dependent Samples t-test
1b.) Imagine you have conducted the appropriate test...

1. After performing an ANOVA test, with (3,4) degrees of
freedom, for data collected during an experiment trying to
determine if there is at least one difference between groups. You
get a calculated F value of 7.52. Using the table below, find the
appropriate critical F value. What should be your conclusion(s),
based on those 2 F values and α?
Select ALL that apply
Critical values of F (α= 0.05)
Group of answer choices:
A. My calculated F value is...

1. Suppose we suspected an unusual distribution of blood groups
in patients undergoing a certain surgical procedure. The data below
gives the results for 100 patient’s blood type:
O A B AB
35 25 30 10
We want to test the hypothesis that the population served by the
hospital that performs the surgery is 30% group O, 20% group A, 40%
group B, and 10% group AB. Test at an alpha level of 0.05. Find the
test statistic.
a 3.68
b 1.98
c 9.49
d 4.58...

What Statistical Test Should I Use
Please indicate the type of test needed to analyze the data
described.
Hints: Think about the IV and DV. How many levels of
the IV? Are they repeated measures? Are the data
categorical?
A. z-test
B. One-Sample t-Test
C. Dependent Measures t-Test
D. Independent Measures t-Test
E. One-way ANOVA
E. One-way ANOVA
F. Post-hoc tests
G. Between-Subjects Factorial ANOVA
H. Chi-Square test of Independence
________ 1. Compare spatial task scores after 0 or 3 drinks....

A medical researcher wants to determine if the average hospital
stay of patients that undergo a certain procedure is greater than
9.1 days. The hypotheses for this scenario are as follows: Null
Hypothesis: μ ≤ 9.1, Alternative Hypothesis: μ > 9.1. If the
researcher takes a random sample of patients and calculates a
p-value of 0.2003 based on the data, what is the appropriate
conclusion? Conclude at the 5% level of significance.
Question 5 options:
1)
The true average hospital...

For each scenario below, do the following:
(1) Indicate which procedure you would use: (i) two-independent
sample t-test, (ii) paired t- test, (iii) chi-square
goodness-of-fit test, (iv) chi-square test of independence, (v)
t-test of a regression coefficient, (vi) an F −test for multiple
regression, (vii) a one-way ANOVA, or (viii) a two-way ANOVA.
(2) Based on your answer in (1), state the appropriate null and
alternative hypotheses.
(3) For all procedures except (i), state the degrees of
freedom(s) for the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 4 minutes ago

asked 17 minutes ago

asked 17 minutes ago

asked 18 minutes ago

asked 21 minutes ago

asked 27 minutes ago

asked 29 minutes ago

asked 29 minutes ago

asked 30 minutes ago

asked 31 minutes ago

asked 31 minutes ago