9. A drug manufacturer advertises that the mean amount of active ingredient per pain-reliever tablet is 200 mg. A consum

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9 A Drug Manufacturer Advertises That The Mean Amount Of Active Ingredient Per Pain Reliever Tablet Is 200 Mg A Consum 1 (286.86 KiB) Viewed 25 times

9. A drug manufacturer advertises that the mean amount of active ingredient per pain-reliever tablet is 200 mg. A consumer group claims that the mean active ingredient per tablet is less than the advertised value. A random sample of 70 tablets is obtained. The mean active ingredient for this sample is 194.3 mg with a standard deviation of 21 mg. (a) State the appropriate null and alternative hypotheses to test the group's claim. (b) State whether the test is two-tailed, left-tailed, or right-tailed. (c) Find the P-value. (d) Make a decision. (e) State the conclusion in context. (f) Based upon your decision, what type of error could have been made? (g) Explain what the error type indicated in part (f) means in this context.