A restaurant chain is measuring the levels of arsenic in chicken from its suppliers. The question...
A restaurant chain is measuring the levels of arsenic in chicken from its suppliers. The question is whether there is evidence that the mean level of arsenic is greater than 80 ppb. The levels of arsenic (in ppb) are:
68,75,81,93,95,134
- What is the sample mean for the data? Use the appropriate notation.
2. Write the null and alternative hypothesis.
3. Describe the meaning of the parameter used in Part (2)
4. Translate the original sample data by the appropriate amount to create a new dataset in which the null hypothesis is true. How do the sample size and standard deviation of this new dataset compare to the sample size and standard deviation of the original dataset?
5. Describe in detail how to create one randomization sample.
6. Use StatKey to find the p-value.
7. State your decision based on the p-value
8. Write your conclusion in context.
9. Could you have made a Type I error or a Type II error?
Homework Answers
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A restaurant chain is measuring the levels of arsenic in chicken
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A 2 sided Confidence Interval for the mean is, in analogy to the 2-sided hypothesis test, a range of values under which you would fail to reject the null hypothesis By rewriting this statement about the rejection region, under the assumption the null hypothesis is true: into a statement about the interval for μ you construct the 2-sided...
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