Answer on Statistics and Probability Question for Faith Hood
a. What statistical test should be used to analyze the data?
b. Is this a one- or two- tailed test?
c. What are H0 and Ha for this study?
d. Find tcv from appendix A in Jackson’s text.
e. Compute t obt
f. Should H0 be rejected? What should the researcher conclude?
b. It's two tailed test
c. Ho : the avegage of the sample equals to the population mean
Ha : the avegage of the sample doesn't equal to the population mean
d. t(cv for df = 9 alpha = 0.05) = 2.26
e. t = (x-mean) / SE
mean = 51.5, SE = dev/√n = 6.23/√10 = 1.9
t = 4.46
f. As tobt > tcv the null hypothesis shouldn't be rejected.
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