Question
In: Statistics and Probability
: Independent Samples t Test Criterion: Identify IV, DV, and hypotheses and evaluate the null hypothesis...
: Independent Samples t Test Criterion: Identify IV, DV, and hypotheses and evaluate the null hypothesis for an independent samples t test. Data:
- Minutes of practice:
- Group 1: 55, 44, 62, 30, 78, 50, 52.
- Group 2: 31, 40, 53, 22, 41, 16, 33.
Complete the following:
a. Identify the IV and DV in the study.
b. State the null hypothesis and the directional (one-tailed) alternative hypothesis.
c. Can you reject the null hypothesis at α = .05? Explain why or why not.
Solutions
orchestra answered 2 years agoRelated Solutions
Write a research hypothesis for which the independent samples t-test will be appropriate. Clearly identify the...
Write a research hypothesis for which the independent samples
t-test will be appropriate. Clearly identify the independent and
dependent variables, and two potential confounding factors.
1. Identify which test the scenario will use: independent samples t test, paired samples t test,...
1. Identify which test the scenario will use:
independent samples t test, paired samples t test, chi square test
for goodness of fit, chi square test for independence or chi square
test for homogeneity.
A. A researcher goes to the parking lot at a large grocery chain
and observes whether each person is male or female and whether they
return the cart to the correct spot before Chi leaving (yes or
no).
B. Amber Sanchez, a statistics student, collected data...
conduct your own example of a related-samples t-test. IV: level 1: level 2: DV:
conduct your own example of a related-samples t-test.
IV:
level 1:
level 2:
DV:
4. For the following problems, indicate what the independent variable (IV), dependent variable (DV), null...
4. For the following problems, indicate what the
independent variable (IV),
dependent variable (DV), null hypothesis (Ho),
alternative hypothesis (HA), and
the appropriate statistical test would be (t-test for
independent samples, t-test for
dependent samples, ANOVA). (15 Pts)
a. Since muscle tension in the head
region is associated with tension headaches,
you reason that if you can reduce tension you will reduce
headaches. You
design an experiment in which 9 subjects with tension
headaches participate....
Indicate which test (dependent samples t-test, independent samples t-test, independent samples z-test) is most appropriate for...
Indicate which test (dependent samples t-test, independent
samples t-test, independent samples z-test) is most appropriate for
the following situation:
i. Comparison of mean recycling participation between 9 large
cities and 11 small cities
ii. Comparison of the weights of 16 Toronto Maple Leaf rookies
at the beginning versus the end of the regular NHL season.
iii. Comparison of fin length of 35 male and 37 female brook
trout sampled in Spruce Lake, Nottingham Forest.
iv. Comparison of the mass of...
both questions go together 6. If the null hypothesis in a t-test for two samples is not...
both questions go together
6. If the null hypothesis in a t-test for two samples
is not rejected, what conclusion can be drawn about the two means
of the categorical variable? Fail to reject null hypothesis'
8. Assume you collected larger samples of individuals
to test your null hypothesis in question
#6. Specifically, the sample sizes increased to 200
subjects in each group. Do your results and conclusions
change from the test of the smaller sample sizes? (You
must show your work).
Determine the decision criterion for rejecting the null hypothesis in the given hypothesis test; i.e., describe...
Determine the decision criterion for rejecting the null
hypothesis in the given hypothesis test; i.e., describe the values
of the test statistic that would result in rejection of the null
hypothesis.
The principal of a middle school claims that the mean test score
of the seventh-graders at his school is higher than 72.1. You wish
to test this claim at the 0.05 level of significance. The mean
score for a random sample of 101 seventh-graders is 75.7 with a
standard...
Criterion: Calculate an independent samples t test in SPSS. Data: Ms Z has two groups of...
Criterion: Calculate an independent samples
t test in SPSS.
Data: Ms Z has two groups of band students.
She asks Group 1 to use her new embouchure strengthening cream
before practice and asks Group 2 to practice as usual. The groups
practiced for the following number of minutes:
Minutes of practice:
Group 1: 55, 44, 62, 30, 78, 50, 52.
Group 2: 31, 40, 53, 22, 41, 16, 33.
Instruction: Complete the following
steps:
Open SPSS and create a New...
Assignment #3: Independent Samples T test Conduct an Independent Samples T test to answer the questions...
Assignment #3: Independent Samples T test Conduct an Independent
Samples T test to answer the questions based on the following
scenario. (Assume a non-directional research hypothesis (two-tailed
test) and a level of significance of .05) The superintendent who
collected data for Assignments 1 and 2, continued to examine the
district’s data. One question that concerned the superintendent’s
constituencies was the difference between the school performance
scores of the superintendent’s district and a neighboring district
that had similar demographic and socio-economic...
Assignment #3: Independent Samples T test Conduct an Independent Samples T test to answer the questions...
Assignment #3: Independent Samples T test Conduct an Independent
Samples T test to answer the questions based on the following
scenario. (Assume a non-directional research hypothesis (two-tailed
test) and a level of significance of .05) The superintendent who
collected data for Assignments 1 and 2, continued to examine the
district’s data. One question that concerned the superintendent’s
constituencies was the difference between the school performance
scores of the superintendent’s district and a neighboring district
that had similar demographic and socio-economic...
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