Question
In: Statistics and Probability
Second chance 1st attempt was wrong A school psychologist wants to determine whether children who live...
Second chance 1st attempt was wrong
A school psychologist wants to determine whether children who live with both parents perform better on school work than children who live with a single parent. She gathers two groups for her comparison, 20 children who live with both parents and another 20 who live with a single parent. The psychologist plans to use scores on a standardized achievement test as an indicator of school performance. Respond to the prompts below. (1 point each)
- What statistical test would be appropriate in this case? Explain the rationale for your answer.
- Identify the independent variable in this study.
- Identify the dependent variable in this study.
- Describe a potentially confounding variable and explain how that might affect the conclusions from the study.
- State the null and alternative hypotheses in words.
Solutions
orchestra answered 2 years agoRelated Solutions
TYPED ANSWER ONLY A school psychologist wants to determine whether children who live with both parents...
TYPED ANSWER ONLY
A school psychologist wants to determine whether children who
live with both parents perform better on school work than children
who live with a single parent. She gathers two groups for her
comparison, 20 children who live with both parents and another 20
who live with a single parent. The psychologist plans to use scores
on a standardized achievement test as an indicator of school
performance. Respond to the prompts below. (1 point each)
What statistical test...
A researcher wants to determine whether high school students who attend an SAT preparation course score...
A researcher wants to determine whether high school students who
attend an SAT preparation course score significantly different on
the SAT than students who do not attend the preparation course. For
those who do not attend the course, the population mean is 1050 (μ
= 1050). The 16 students who attend the preparation course average
1150 on the SAT, with a sample standard deviationof 300. On the
basis of these data, can the researcher conclude that the
preparation course has...
A researcher wants to determine whether high school students who attend an SAT preparation course score...
A researcher wants to determine whether high school students who
attend an SAT preparation course score significantly different on
the SAT than students who do not attend the preparation course. For
those who do not attend the course, the population mean is 1050 (μ
= 1050). The 16 students who attend the preparation course average
1150 on the SAT, with a sample standard deviationof 300. On the
basis of these data, can the researcher conclude that the
preparation course has...
A researcher wants to determine whether high school students who attend an SAT preparation course score...
A researcher wants to determine whether high school students who
attend an SAT preparation course score significantly different on
the SAT than students who do not attend the preparation course. For
those who do not attend the course, the population mean is 1050 (μ
= 1050). The 16 students who attend the preparation course average
1150 on the SAT, with a sample standard deviation of 300. On the
basis of these data, can the researcher conclude that the
preparation course...
A psychologist is interested in knowing whether adults who were bullied as children differ from the...
A psychologist is interested in knowing whether adults who were
bullied as children differ from the general population in terms of
their empathy for others. On a questionnaire designed to measure
empathy, the mean score for the general population is 80.82. Random
sampling of 76 scores obtained from individuals who were bullied
yielded a mean of 66.42 and a standard deviation of 22.87.
Suppose you want to calculate the 99% confidence interval.
A psychologist is interested in knowing whether adults who were bullied as children differ from the...
A psychologist is interested in knowing whether adults who were
bullied as children differ from the general population in terms of
their empathy for others. On a questionnaire designed to measure
empathy, the mean score for the general population is 30.6. Random
sampling of 25 scores obtained from individuals who were bullied
yielded a sample mean of 39.5 and a sample standard deviation of
6.6.
Test at the .05 level of significance.
Set up the criteria for making a decision....
7. A psychologist wants to know whether wives and husbands who both serve in a foreign...
7. A psychologist wants to know whether wives and husbands who
both serve in a foreign war have similar levels of satisfaction in
their marriage. To test this, six married couples currently serving
in a foreign war were asked how satisfied they are with their
spouse on a 7-point scale ranging from 1 (not satisfied at all) to
7 (very satisfied). The following are the responses from husband
and wife pairs.
Married Couples
Wife
Husband
6
5
4
6
7...
A psychologist wants to know whether wives and husbands who both serve in a foreign war...
A psychologist wants to know whether wives and husbands who both
serve in a foreign war have similar levels of satisfaction in their
marriage. To test this, six married couples currently serving in a
foreign war were asked how satisfied they are with their spouse on
a 7-point scale ranging from 1 (not satisfied at all) to 7 (very
satisfied). The following are the responses from husband and wife
pairs.
Married Couples
Wife
Husband
7
5
4
6
7
5...
A psychologist wants to know whether wives and husbands who both serve in a foreign war...
A psychologist wants to know whether wives and husbands who both
serve in a foreign war have similar levels of satisfaction in their
marriage. To test this, six married couples currently serving in a
foreign war were asked how satisfied they are with their spouse on
a 7-point scale ranging from 1 (not satisfied at all) to 7
(very satisfied). The following are the responses from
husband and wife pairs.
Married Couples
Wife
Husband
7
5
4
6
7
5...
A psychologist wants to know whether wives and husbands who both serve in a foreign war...
A psychologist wants to know whether wives and husbands who both
serve in a foreign war have similar levels of satisfaction in their
marriage. To test this, six married couples currently serving in a
foreign war were asked how satisfied they are with their spouse on
a 7-point scale ranging from 1 (not satisfied at all) to 7
(very satisfied). The following are the responses from
husband and wife pairs.
Married Couples
Wife
Husband
7
5
4
6
7
5...
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