Project #31299 - Psych Stats quiz

Psych Stats Quiz online.. start asap

 

stay online with me while i send you questions via instant message or message as a sceen shot

 

50 questions

 

... 3 hour time limit mult choice.. i get my grade right away and want a B or higher

 

here are examples

 

The t test assumes that the independent variable affects the ____ of the populations.
 
 
 
 

 

 

Refer to the following partial ANOVA results from Excel (some information is missing). 
ANOVA Table

 Picture 
The F statistic is
 
 
 
 

 

 

 

If you examined the effect of studying 0, 1, or 2 hours a day on grades, what would be the value of k?
 
 
 
 

 

 

 

 

If the null hypothesis is true, what value is expected on average for the related-samples t statistic is?
a.
b.
c.
d.

 

 

A researcher obtains t = 2.35 for a repeated-measures study using a sample of n = 8 participants. Based on this t value, what is the correct decision?
a.
b.
c.
d.

 

 

 

If the homogeneity of variance assumption is violated in an independent groups t test, this means ____.
 
 
 
 
 

 

 

An ANOVA procedure is applied to data obtained from 6 samples where each sample contains 20 observations. The degrees of freedom for the critical value of F are
 
 
 
 

 

 

 

Source
of Variation
Sum
of Squares
Degrees
of Freedom
Mean
Square
F
Between Treatments
2,073.6
4
   
Between Blocks
6,000
5
1,200
 
Error  
20
288
 
Total  
29
   
         


Refer to Exhibit 13-2. The null hypothesis for this ANOVA problem is
 
 
 
 

 

 

The personnel department of a large corporation reported sixty resignations during the last year. The following table groups these resignations according to the season in which they occurred:

Season
Number of
Resignations
Winter
10
Spring
22
Summer
19
Fall
9
   

Test to see if the number of resignations is uniform over the four seasons.
Let a = 0.05. Please select the INCORRECT answer:
 

c2 obt = 8.41

 
 

critical c2  = 7.815

 

df = 3

 

 

A researcher is interested in whether frequencies of ice cream preference are evenly distributed across the three categories of vanilla, chocolate, and strawberry.  Please select the INCORRECT answer:

Ice Cream Preference         
Vanilla                                 100
Chocolate                              70
Strawberry                            40
Total                                    210
 

Chi-square table = 5.991

 

the expected cell frequency is 70

 

Chi-square obtained = 2.57

 

Chi-square obtained = 25.71

 

Find the value of the linear correlation coefficient r.

 
 
 
 

 

Obtain the linear correlation coefficient for the data. Round your answer to three decimal places.

The data below show the test scores (y) of 6 randomly selected students and the number of hours (x) they studied for the test.

 
 
 
 

 

 

A chi-square test may be used to analyze the relationship between two variables when ______.
a.
b.
c.
d.

 

 

From a factorial ANOVA with factors A and B, you can determine if
 
 
 
 

 

 

hoose the strongest correlation:
 
 
 
 

 

 

A strong curvilinear relationship between two variables might yield a Pearson's r that is:
 
 
 
 

 

 

 

A positive correlation between variables X and Y implies:
 
 
 
 

 

 

Pearson's r can be used when
 
 
 
 

 

 

When carrying out an analysis of variance with equal sample sizes, the estimated variance of the distribution of means is converted to an estimated variance of the population of individual scores by
 
 
 
 

Subject Mathematics
Due By (Pacific Time) 05/19/2014 03:00 pm
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