Is there a relationship between body fat and resting rate. Test
at alpha =.05 test the significance of the relationship between
body fat and resting rate using table I or the traditional five
step method.
Participant
body fat
resting rate
A
41.2
1204
B
51.1
1346
C
34.5
1052
D
42.4
1125
E
33.1
913
F
40.3
1190
G
42
1256
H
50.6
1502
I
42
1420
J
48.5
1396
K
54.6
1425
L
36.1
995
Let E and F be independent events. Show that the events E and F
care also independent.
Hint: Start with P(E∩Fc) =P(E)−P(E∩F) and use the independence
of E and F.
Test the hypothesis with a significance level (alpha) of .05
that the climate has changed since industrialization. Suppose that
the mean temperature throughout history is 52 degrees. During the
last 30 years, the mean temperature has been 53 degrees and suppose
the population standard deviation is 2 degrees. What can we
conclude? Then construct a 95 percent confidence interval for the
population mean.
Please state the null and alternative
hypotheses.
Using an alpha level of .05, please test the null
hypothesis (what is the appropriate test, what is the critical
value?). Draw the rejection region.
Calculate the test statistic
State the conclusion you are entitled to draw as a
result of this test.
Calculate the effect size as appropriate for the
hypothesis test used.
A researcher has developed a new therapy for the treatment of
depression. The researcher has selected a small sample...
Please state the null and alternative
hypotheses.
Using an alpha level of .05, please test the null
hypothesis (what is the appropriate test, what is the critical
value?). Draw the rejection region.
Calculate the test statistic
State the conclusion you are entitled to draw as a
result of this test.
Calculate the effect size as appropriate for the
hypothesis test used.
A professor believes that psychology students study more than
the average college student (after all, psychology students
understand the...
Please state the null and alternative
hypotheses.
Using an alpha level of .05, please test the null
hypothesis (what is the appropriate test, what is the critical
value?). Draw the rejection region.
Calculate the test statistic
State the conclusion you are entitled to draw as a
result of this test.
Calculate the effect size as appropriate for the
hypothesis test used.
A recent study on the effects of Tamiflu looked into whether
the antiviral medication can reduce the duration of...
Please state the null and alternative
hypotheses.
Using an alpha level of .05, please test the null
hypothesis (what is the appropriate test, what is the critical
value?). Draw the rejection region.
Calculate the test statistic
State the conclusion you are entitled to draw as a
result of this test.
Calculate the effect size as appropriate for the
hypothesis test used.
A current popular game relies on the rolling of twenty sided
dice to determine success or failure. The current...
N =16
G = 120
ΣX² = 1036
The following scores are from an independent-measure study comparing two treatment conditions.
Treatment
I
II
10
7
8
4
7
9
9
3
13
7
7
6
6
10
12
2
Use an independent-measures t test with α = .05 to determine whether there is a significant mean difference between the two treatments.
Use an ANOVA with α = .05 to determine whether there is a significant mean difference between the...
Note: If the alpha level is not included, set the alpha to .05.
Problem 1: The Graded Naming Test (GNT) asks respondents to name
objects in a set of 30 black and white drawings in order to detect
brain damage. The GNT population norm for adults in England is
20.4. Researchers wondered whether a sample for Canadian adults had
different scores from adults in England (Roberts, 2003). If the
scores were different, the English norms would not be valid for...
Please conduct an independent-sample t-test, α =
.05.
Two persons are arguing about the size of different breeds of
dogs. One believes that German Shepherds are larger than Huskies,
while the other person believes the opposite is true. So they
conducted a study to see which one of them is correct by randomly
sampling and weighting 10 dogs of each breed they saw on a Sunday
afternoon in their community. This is an independent-sample case.
The data are as follows:...