eutical manufacturer is concerned that the impurity concentration in pills should not exceed 3%. It is known that from a particular production run impurity concentration follow a normal distribution with a standard deviation of 0.4%. A random sample of 64 pills from a production run was checked, and the sample mean impurity concentration was found to be 3.07%. Test at the 5% level the null hypothesis that the population mean impurity concentration is 3% against the alternative that it is more than 3%. State the null and the alternative hypothesis and comment whether its a one tail or two tail test? If one tail then right or left tail test? (write your answer as right tail test/ left tail test/ two tail test) unanswered Identify the critical value. Ans in two decimal places. unanswered What is the calculated value? Ans in one decimal places. unanswered Write the decision rule and identify whether the condition holds. (write answer as condition holds/ condition does not hold). unanswered Give final decision. (write answer as reject null/ do not reject null)
A pharmaceutical manufacturer is concerned that the impurity concentration in pills should not exceed 3%. It is known that from a particular production run impurity concentration follow a
State the null and the alternative hypothesis and comment whether its a one tail or two tail test? If one tail then right or left tail test? (write your answer as right tail test/ left tail test/ two tail test)
Identify the critical value. Ans in two decimal places.
What is the calculated value? Ans in one decimal places.
Write the decision rule and identify whether the condition holds. (write answer as condition holds/ condition does not hold).
Give final decision. (write answer as reject null/ do not reject null)
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