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An independent-measures t hypothesis test is appropriate when-------------

a. the value of is know 

b. the mean for a treated group of subjects is compared to a know population mean.

c. one sample is used to test a hypothesis about one population.

d. there are two separate samples containing different subjects.

 

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Priyanshu Patel
Priyanshu PatelLv10
27 Feb 2021
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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

Which of the following would be an appropriate alternative hypothesis?
A. The mean of a population is equal to 55.
B. The mean of a sample is equal to 55.
C. The mean of a population is greater than 55.
D. The mean of a sample is greater than 55.

Which of the following would be an appropriate null hypothesis?
A. The mean of a population is equal to 55.
B. The mean of a sample is equal to 55.
C. The mean of a population is greater than 55.
D. Only (a) and (c) are true.

Consider the following hypothesis test:

H0: µ = 20
Ha: µ < 20
A sample of 50 provided a sample mean of 19.4. The population standard deviation is 2.
a. Compute the value of the test statistic (to 2 decimals).

b. What is the p-value (to 3 decimals)?

c. Using a = .05, can it be concluded that the population mean is less than 20?

d. Using a = .05, what is the critical value for the test statistic?

e. State the rejection rule: Reject H0 if z is the critical value.
f. Using a = .05, can it be concluded that the population mean is less than 20

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