Question
In: Statistics and Probability
You will perform a Two Sample Hypothesis Test for Means. For the Hypothesis Tests, make sure...
You will perform a Two Sample Hypothesis Test for Means. For the Hypothesis Tests, make sure to report the following steps:
Identify the null hypothesis, Ho, and the alternative hypothesis, Ha.
Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
Find the critical value(s) and identify the rejection region(s).
Find the appropriate standardized test statistic. If convenient, use technology. Decide whether to reject or fail to reject the null hypothesis.
Interpret the decision in the context of the original claim.
Question: A science teacher claims that the mean scores on a science assessment test for fourth grade boys and girls are equal. The mean score for 63 randomly selected boys is 151 with a standard deviation of 36, and the mean score for 65 randomly selected girls is 149 with a standard deviation of 34. At α = 0.10, can you reject the teacher’s claim? Assume the populations are normally distributed and the population variances are equal.
Solutions
orchestra answered 1 year agoRelated Solutions
You will perform an ANOVA test. For the hypothesis test make sure to report the following...
You will perform an ANOVA test. For the
hypothesis test make sure to report the following steps:
Identify the null hypothesis, Ho, and the alternative
hypothesis, Ha.
Determine whether the hypothesis test is left-tailed,
right-tailed, or two-tailed.
Find the critical value(s) and identify the rejection
region(s).
Find the appropriate standardized test statistic. If
convenient, use technology.
Decide whether to reject or fail to reject the null
hypothesis.
Interpret the decision in the context of the original
claim.
The grade point...
You will perform a Chi-Square test test. For the hypothesis test make sure to report the...
You will perform a Chi-Square test test. For
the hypothesis test make sure to report the following steps:
Identify the null hypothesis, Ho, and the alternative
hypothesis, Ha.
Determine whether the hypothesis test is left-tailed,
right-tailed, or two-tailed.
Find the critical value(s) and identify the rejection
region(s).
Find the appropriate standardized test statistic. If
convenient, use technology.
Decide whether to reject or fail to reject the null
hypothesis.
Interpret the decision in the context of the original
claim.
A sports...
You will perform a Chi-Square test and an ANOVA test. For each hypothesis test make sure...
You will perform a Chi-Square test and an
ANOVA test. For each hypothesis test make sure to
report the following steps:
Identify the null hypothesis, Ho, and the alternative
hypothesis, Ha.
Determine whether the hypothesis test is left-tailed,
right-tailed, or two-tailed.
Find the critical value(s) and identify the rejection
region(s).
Find the appropriate standardized test statistic. If convenient,
use technology.
Decide whether to reject or fail to reject the null
hypothesis.
Interpret the decision in the context of the original...
Perform a hypothesis test (comparing means) on the two populations below. Assume equal means and normal...
Perform a hypothesis test (comparing means) on the two
populations below. Assume equal means and normal distribution.
Population A
Population B
42
65
41
22
50
51
25
17
78
24
35
57
19
67
22
26
45
88
45
85
A hypothesis will test that two population means are equal. A sample of 10 with a...
A hypothesis will test that two population means are equal. A
sample of 10 with a standard deviation of 3 is selected from the
first population and a sample of 15 with a standard deviation of 8
from the second population. The standard deviations are not equal.
Testing the claim at the 0.01 level, what is the critical value?
Assume unequal standard deviations.
Please explain and show your work.
Thank you!
Perform the appropriate Hypothesis Test for the following (Be sure to have a null hypothesis (H0)...
Perform the appropriate Hypothesis Test for the following (Be
sure to have a null hypothesis (H0) and alternate hypothesis; (H1).
Explain how to find test statistic and P-value on the calculator;
also Interpret the results (i.e. Reject or Fail to Reject H0), (Is
or Is not significant evidence to support the claim H1).
You want to see if all three college algebra classes have the
same mean. Use the following data to test your claim at a .01
significance level....
For all hypothesis tests, be sure to include information for all 7 steps. For any two-sample...
For all hypothesis tests, be sure to include information
for all 7 steps. For any two-sample or paired t-tests that you
perform, in Step 6, show the decision rule based on BOTH the
critical value and the p-value. Use the online app for the
t-distribution to compute your p-values.
The Bayley Scales of Infant Development yield scores on two
indices – the Psychomotor Development Index (PDI) and the Mental
Development Index (MDI) – that can be used to assess a...
For each situation, perform a hypothesis test for the population mean. Be sure to show the...
For each situation, perform a hypothesis test for the population
mean. Be sure to show the null hypothesis H0, the alternative
hypothesis H1, the P-level you get from TTest, the result of the
test (i.e. reject / do not reject H0) and the conclusion (interpret
the result in English).
A Jedi sage would like proof that Jedi trainees have a higher
level of midichlorians than non-Jedis. Non-Jedis have a mean
midichlorian level of 2500. A random sample of 25 Jedi...
Perform and document a two-sample hypothesis test to evaluate the claim "American cars of the past...
Perform and document a two-sample hypothesis
test to evaluate the claim "American cars of the past have a
significantly different weight than non-americas cars of the past."
Document all seven of the hypothesis testing
steps.
Data from my calculations:
American Sample
MPG
X-Bar= 20.12
S= 6.36
N=247
Horsepower
X-bar= 119.74
S=39.73
N=248
Not American Sample
MPG
X-bar=29.22
S=6.67
N=151
Horsepower
X-bar=80.93
S=22.12
N=152
Data from both American and non American samples (if
needed):
MPG
Mean/X-bar= 23.57
Standard Deviation= 7.84
Count=...
Perform these hypothesis tests. Show the formulas for the test statistics and what numbers go into...
Perform these hypothesis tests. Show the formulas for the test
statistics and what numbers go into them. Clearly show your
decision, write it in words, and be sure to write out your null and
alternative hypotheses. In a study of 40 heterosexual couples, 28
of the 40 couples the male said “I love you” first. The researchers
were interested in learning whether these data provided evidence
that in significantly more than 50% of these couples the male says
“I love...
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