Question

Which of these can be properly regarded as a statistical hypothesis?

= -2.5

*z* = 2.8

None of the options

μ_{0} = 0.5

Answer #1

In which case would testing the null hypothesis involve a
two-tailed statistical test?

Which of the following p-values is statistically
significant?
Statistical significance is determined via hypothesis
testing.
Null hypothesis = No difference
What is the “magic number” at which we reject the null
hypothesis?

Which of the following is not an assumption of
the z test?
Group of answer choices
The dependent variable is measured as a scale variable.
Participants are randomly selected.
A one-tailed test is being used.
All of the options listed above are assumptions of the z
test.
None of the options listed above are assumptions of the z
test.

Test the null hypothesis H0:p=0.5against the alternative
hypothesis HA:p<0.5, when 89 individuals in a random sample of
218 have a characteristic of interest.
Proportions are very sensitive to round-off error. Please
ensure that you attempt to round p^as little as possible.
a) Calculate the value of the z test statistic, for
testing the null hypothesis that the population proportion is
0.5.
Round your response to at least 3 decimal places.
b) The p-value falls within which one of the following...

Test the null hypothesis H0:p=0.5against the alternative
hypothesis HA:p<0.5, when 92 individuals in a random sample of
219 have a characteristic of interest.
Proportions are very sensitive to round-off error. Please
ensure that you attempt to round p^as little as possible.
a) Calculate the value of the z test statistic, for
testing the null hypothesis that the population proportion is
0.5.
Round your response to at least 3 decimal places.
b) The p-value falls within which one of the following...

In conducting a hypothesis test, which of these can we NOT
conclude? A. there is no evidence that the null is false B. the
alternative hypothesis is true C. the null hypothesis is true D.
the null hypothesis is not true

You need to test the following hypothesis using which
statistical test?
Girls who participate in an after-school character building
program for 6 weeks have improved self-image (total self-image
score 0 to 100) from the beginning of the program (time 1) to the
end of the program (time 2).
Select one:
a. Paired-samples t-test
b. Chi-square
c. T-test
d. Correlation

1. Which of the following amino acids is properly paired with a
property?
Question options: a) glycine: contains a polar R group
b) proline: presence in polypeptide may cause abrupt change in
direction and/or restricted geometry
c) leucine: basic amino acid d) aspartate: generally positively
charged at neutral pH
e) valine: an amino acid that is ideal for the transfer of
protons within the catalytic site of enzymes due to the presence of
significant amounts of both the protonated and...

49. Which analysis should the experimenter conduct to test the
hypothesis?
Z test
Repeated Measures T test
Single Sample T test
Independent samples T test

Which determines whether you can causally interpret the results:
the specific statistical model chosen to analyze the data, or the
design of the study?

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