4. Explain the meaning of any parameters you used in the hypotheses you gave in part (3).

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Consider the following scenario and answer the subsequent questions.
An experiment was performed to compare the tension bond strength of
polymer latex modified mortar to that of unmodified mortar. A sample of
size 40 produced a mean of 17.12 and a standard deviation of 1.3 (both
measured in kgf/cm -) for the modified mortar. A sample of size 33
produced a mean of 16.94 and a standard deviation of 1.2 (again, both
measured in kgf/cm ) for the unmodified mortar.
1. In the above scenario, how many samples are taken?
2. Is the experiment being conducted concerned with means or proportions?
3. Write two hypotheses that would allowa researcher to determine whether or
not the average tension bond strength of polymer latex modified mortar is
higher than that of unmodified mortar.
4. Explain the meaning of any parameters you used in the hypotheses you gave
in part (3).
5. Would you use a Z statistic or a t statistic to test the hypotheses you gave in
part (3)?
6. The researchers conducting this experiment set a =, 05 and computed a
test statistic of 0.614. Assuming their research hypotheses match those you
provided in part (3), would the researchers reject, or not reject Ho?
Transcribed Image Text:Consider the following scenario and answer the subsequent questions. An experiment was performed to compare the tension bond strength of polymer latex modified mortar to that of unmodified mortar. A sample of size 40 produced a mean of 17.12 and a standard deviation of 1.3 (both measured in kgf/cm -) for the modified mortar. A sample of size 33 produced a mean of 16.94 and a standard deviation of 1.2 (again, both measured in kgf/cm ) for the unmodified mortar. 1. In the above scenario, how many samples are taken? 2. Is the experiment being conducted concerned with means or proportions? 3. Write two hypotheses that would allowa researcher to determine whether or not the average tension bond strength of polymer latex modified mortar is higher than that of unmodified mortar. 4. Explain the meaning of any parameters you used in the hypotheses you gave in part (3). 5. Would you use a Z statistic or a t statistic to test the hypotheses you gave in part (3)? 6. The researchers conducting this experiment set a =, 05 and computed a test statistic of 0.614. Assuming their research hypotheses match those you provided in part (3), would the researchers reject, or not reject Ho?
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