Bags of a certain brand of tortilla chips claim to have a net weight of 16 ounce

Question

Bags of a certain brand of tortilla chips claim to have a net weight of 16 ounces. Net weights actually vary slightly from bag to bag and are Normally distributed with mean . A representative of a consumer advocate group wishes to see if there is any evidence that the mean net weight is less than advertised and so intends to test the hypotheses H0: = 16, Ha: < 16. To do this, he selects 24 bags of this brand at random and determines the net weight of each. He finds the sample mean to be = 15.68 and the sample standard deviation to be s = 0.64. Suppose we were not sure if the distribution of net weights was Normal. In which of the following circumstances would we not be safe using a t-procedure in this problem? A. The mean and median of the data are nearly equal. B. A histogram of the data shows moderate skewness. C. A stemplot of the data has a large outlier. D. The sample standard deviation is large.

Explanation / Answer

Correct answer: Option (C) A stemplot of the data has a large outlier

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.