9.2 Tests About a Proportion

The P in PHANTOMS: What is the parameter of interest for this problem?

• p= the actual proportion of potatoes in the shipment that have blemishes

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  p-hat=the actual proportion of potatoes in the shipment that have blemishes

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  p=the actual proportion of potatoes in the sample that have blemishes

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  p-hat=the actual proportion of potatoes in the sample that have blemishes

H in PHANTOMS: What are the correct hypotheses for this problem?

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N in PHANTOMS: What is the name of the procedure that we are using for this problem?

• 1-Proportion Z-Interval

• Hypothesis HA test

• 1-Proportion Z-Test

• Hypothesis t-test

T in PHANTOMS: What is the test statistic for this inference procedure?

• z = 1.15

• z = -1.15

• z = -39.47

• z = 0

M in PHANTOMS: Make a decision about the null hypothesis, H0.

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