3864-3-21E
AID: 1825 | 24/08/2013
It is given that there are pre- and post-effects of a cognitive-behavior intervention on
weight in anorexic girls. The following table shows the pre- and post-weight data along
with their gain and gain percentages:
Pre
Po
3864-4-4E
AID: 1825 | 17/08/2013
Definition:
Statistical hypothesis: Any statement about a statistical population or the values of its
parameters is called statistical hypothesis.
Null hypothesis: A statistical hypothesis which is assumed and whose validi
3864-4-5E
AID: 1825 | 17/08/2013
Definition:
Statistical hypothesis: Any statement about a statistical population or the values of its
parameters is called statistical hypothesis.
Null hypothesis: A statistical hypothesis which is assumed and whose validi
3684-3-19E
AID: 1825 | 31/08/2013
In Section 3.6, by Achenbachs Youth Self-Report checklist, T scores are designed such
that the mean is 50 and standard deviation is 10.
From Figure (1), the mean is not exactly 50 and the standard deviation is not exactly
3864-4-3E
AID: 1825 | 17/08/2013
Definition:
Statistical Hypothesis: Any statement about a statistical population or the values of its
parameters is called Statistical Hypothesis.
Null hypothesis: A statistical hypothesis which is assumed and whose validi
3864-4-2E
AID: 1825 | 17/08/2013
Definition:
Statistical Hypothesis: Any statement about a statistical population or the values of its
parameters is called Statistical Hypothesis.
Null hypothesis: A statistical hypothesis which is assumed and whose validi
3864-4-1E
AID: 1825 | 17/08/2013
Definition:
Statistical Hypothesis: Any statement about a statistical population or the values of its
parameters is called Statistical Hypothesis.
Null Hypothesis: A statistical hypothesis which is assumed and whose validi
3864-3-22DQ
AID: 1825 | 07/09/2013
The data represents the Reaction time data from the number identification experiment as
a frequency distribution. The mean is 60.26 and the standard deviation is 13.01. The
percentage of the sample lies below or above 1.
3864-3-23DQ
AID : 1825 | 24/08/2013
Create a set of 16 scores that were normally distributed with a mean of 16.3 and a
standard deviation of 4.25.
1. Choose a sample of 16 scores from a population that is normally distributed with mean
0 and standard devi
3864-3-24DQ
AID: 1825 | 31/08/2013
Given: The data of salaries paid to professors of Psychology with 7 to 11 years of service
in 20082009 (data available on http:/www.uvm.edu/~dhowell/methods8/DataFiles/Ex324.dat).
The following histogram [Figure (1)] rep
3864-3-20E
AID: 1825 | 17/01/2014
(a)
Construct the Q-Q plot.
Use SPSS to obtain the Q-Q plot for the given 20 observations.
SPSS Procedure to define the plot:
Step 1: Choose TRANSFORM and select COMPUTE.
Step 2: In TARGET VARIABLE box, enter the variable
3864-3-18E
AID: 1825 | 17/08/2013
It is given that the mean and standard deviation of the Behavior Problem scores are 50
and 10, respectively.
That is,
50, 10
The meaningful cutoff for those children whose scores lie within the highest 2% of the
populati
3864-3-17E
Find the
75th
AID: 1825 | 24/08/2013
percentile for GPA in Appendix Data Set.
GPA scores from the appendix data set:
ID
GP
A
GP
A
ID
GP
A
ID
GP
A
01
2.60 16 2.50
31
0.67
46
2.75 61 3.75
02
2.75 17 3.55
32
2.25
47
2.67 62 2.67
03
4.00 18 2.75
33
3864-3-15E
AID: 1825 | 17/08/2013
It is given that the mean and standard deviation on the Graduate Record Exam (GRE) for
all seniors and non-enrolled college graduates taking the exam were 507 and 118,
respectively.
The percentage of students who score 60
3864-3-14E
AID: 1825 | 17/08/2013
It is given that the mean and standard deviation on the Graduate Record Exam (GRE) for
all people taking the exam were 489 and 126, respectively.
The score that would be equal to or greater than 75% of the scores is given
3864-3-16E
AID: 1825 | 17/08/2013
It is given that the mean and standard deviation scores of all people who have taken the
GRE were 489 and 126, respectively and the mean and standard deviation scores of all
seniors and non-enrolled college graduates were
3864-3-10E
AID: 1825 | 08/08/2013
Definitions:
The probability density function of a random variable X that follows a normal distribution
is given by:
1
f x
e
2
x 2
2 2
Where, and are the mean and standard deviation of the distribution, respectively.
S
3864-3-11E
AID: 1825 | 17/08/2013
A diagnostic test of language problems has been conducted and the scores are obtained
simply by counting the number of language constructions (for example, plural, negative,
passive) that the child produces correctly in r
3864-3-9E
AID: 1825 | 08/08/2013
Definitions:
The probability density function of a random variable X that follows a normal distribution
is given by:
1
f x
e
2
x 2
2 2
Where, and are the mean and standard deviation of the distribution, respectively.
St
3864-3-8E
AID : 1825 | 08/08/2013
Definitions:
The probability density function of a random variable X that follows a normal distribution
is given by:
1
f x
e
2
x 2
2 2
Where, and are the mean and standard deviation of the distribution, respectively.
S
3864-2-39E
AID: 1825 | 29/11/2013
It is given that the data represents the Grade Point Average of the 88 students. The
histogram is created by using the MINITAB as shown below:
MINITAB procedure:
Step 1: Choose Graph > Histogram.
Step 2: Choose With Fit,
3864-3-7E
AID: 1825 | 08/08/2013
(i)Part(b)fromexercise3.6:
Thepercentageofthefourthgradersscorebetterthantheaverageninthgraders:
The percentage of the fourth-graders score better than the average ninth-graders when the
scores of the fourth-graders are gr
3864-3-6E
AID: 1825 | 08/08/2013
a)
It is given that,
For fourth-grade children, Mean
For ninth-grade children, Mean
25
30
and Standard deviation
and Standard deviation
5
.
10
.
The following sketch illustrates the given data.
MINITAB Procedure:
1. Cho
3864-2-53E
AID: 1825 | 24/08/2013
The reaction-time data from number identification experiment to positive and negative
instances are given in the below table.
Comparison
Stimuli*
1Y
3Y
5Y
1N
3N
5N
40
47
90
73
55
43
39
59
67
52
62
44
73
72
64
66
65
59
41
3864-3-5E
AID: 1825 | 08/08/2013
Let X be the number of shoppers entering into the store counted by a judge.
It is given that the mean,
, and standard deviation,
.
975
15
The judges count of number of shoppers entering into the store can be calculated u
3864-2-54E
AID: 1825 | 24/08/2013
Definition:
The process in which the original data in the sample is changed by applying mathematical
operations is a transformation. The purpose of having transformations in the given data is
to increase their interpretat
3.Using Regression to Calculate Fixed Cost, Calculate the Variable Rate, Construct a Cost Formula, and Determine Budgeted Cost
Pizza Vesuvio makes specialty pizzas. Data for the past eight months were collected:
Month
Labor Cost
Employee Hours
January
$6,
Weighted Average
Whole
Units
DM
%
Equivalent
DM
Conv
%
Equivalent
Conversion
Beginning
IN
Total
X
OUT
100%
100%
Ending
Total
X
Beginning
Added In
Dollars
Dollars
$
$
$
$
Total:
Divide by Equiv
Cost per Unit
$
$
Now assign the cost per unit to the equivale