Question
In: Statistics and Probability
Please state the null and alternative hypotheses. Using an alpha level of .05, please test 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 professor believes that psychology students study more than the average college student (after all, psychology students understand the benefits to distributed practice). To test this, the professor records the weekly study rate of a sample of 20 psychology students (M = 21.6, SD = 6.8), and compares this with the University’s data on the average of 18 hours each week a typical college student studies. What is the effect size of this difference?
Solutions
Expert Solution
1) H0 : Psychology student and
college students do same study.
H1 : psychology students study more than the average college student.
2) Test Statistics = 2.368
3) P value = 0.0143
4 ) Rejection region = 1.729
5) Conclusion - Psychology students study more than the average college student. PL??
orchestra answered 2 years agoRelated Solutions
Please state the null and alternative hypotheses. Using an alpha level of .05, please test 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 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...
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...
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...
Exercise 1. Given the following null and alternative hypotheses, conduct a hypothesis test using an alpha...
Exercise 1. Given the following null and alternative hypotheses,
conduct a hypothesis test using
an alpha equal to 0.05. (Note: The population standard
deviations are assumed to be known.)
?0: ?1 – ?2 ≤ 0
?a: ?1− ?2> 0
? = 0.05
The sample means for the two populations are shown as
follows:
Sample 1
Sample 2
n1= 40
n2= 50
x1= 144
x2= 129
s1= 11
s2= 16
state all null and alternative hypotheses and use the appropriate test statistic. Please use Minitab and...
state all null and alternative hypotheses and use the
appropriate test statistic. Please use Minitab and show step by
step. Finally, draw your conclusions based on the Minitab
output
Capsule
Week
betacar
1
one
116
1
one
146
1
one
200
1
one
180
1
one
142
2
one
110
2
one
114
2
one
100
2
one
92
2
one
212
3
one
162
3
one
198
3
one
208
3
one
160
3
one
88
4
one
182...
state all null and alternative hypotheses and use the appropriate test statistic. Please use Minitab, show...
state all null and alternative hypotheses and use the
appropriate test statistic. Please use Minitab, show step by step.
Finally, draw your conclusions based on the Minitab
output.
The intake of high doses of beta-carotene in food substances has
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State the null and alternative hypotheses, calculate the test statistic, determine the critical value for the...
State the null and alternative hypotheses, calculate the test
statistic, determine the critical value for the given alpha,
determine whether to reject or retain the null, and then draw a
conclusion about the original study based on the significance test
results.
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Trying to Impress Not Trying to Impress
Males 30 10
Females 20 30
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State the null and alternative hypotheses, calculate the test statistic, determine the critical value for the...
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statistic, determine the critical value for the given alpha,
determine whether to reject or retain the null, and then draw a
conclusion about the original study based on the significance test
results.
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**BY HAND** For the Data Below, please do the following: State the null and alternative hypotheses....
**BY HAND** For the Data Below, please do the
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State the null and alternative hypotheses. (2
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A survey was done in a community in which residents were
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a. Please state both the null and alternative hypotheses for this question. b. Provide the decision...
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A professor wants to determine whether her department should
keep the requirement of college algebra as a prerequisite for an...
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