For each hypothesis test you complete, please answer questions (a) through (i) listed below. (a) What conditions should you check first before you con- duct the hypothesis test? (b) Write the null and alternative hypotheses. (c) What type of test are you doing: right-tailed, left-tailed or two-tailed?
For each hypothesis test you complete, please answer questions (a)
through (i) listed below.
(a) What conditions should you check first before you con-
duct the hypothesis test?
(b) Write the null and alternative hypotheses.
(c) What type of test are you doing: right-tailed, left-tailed
or two-tailed?
(d) What formula should be used for the test statistic?
(e) What number is the test statistic equal to?
(f) Sketch a graph of the p-value
(g) What p-value do you obtain? Round to the ten-thousandths.
(h) Do you reject the null hypothesis or fail to reject the
null hypothesis? Explain.
(i) Please write a conclusion sentence, in the context of the
problem, that explains to a lay person the result of the hypothesis
test.
6. Weights of Sugar Packets A student of the author ran-
domly selected 70 packets of sugar and weighed the contents of each
packet, getting a mean of 3.586 g and a standard deviation of 0.074
g. Test the claim that the weights of the sugar packets have a mean
equal to 3.5 g, as indicated on the label. If the mean does not appear
to equal 3.5 g, does the difference appear to be large enough to create
health problems for consumers?
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