Samples of peanut butter produced by three different manufacturers were
Samples of peanut butter produced by three different manufacturers were tested for salt content (in milligrams), with the following results:
Is there a significant difference in the mean amount of salt in these samples? Use a = 0.05 .
a. State the null and alternative hypotheses.
b. Determine the test criteria: assumptions, level of significance, test statistic.
c. Using the information on the computer printout that follows, state the decision and conclusion to the hypothesis test.
d. What does the p-value tell you? Explain.
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