The U.S. Golf Association requires that golf balls have a diameter that is 1.68 inches. To determine if Maxfli XS golf balls conform to USGA standards, a random sample of Maxfli XS golf balls was selected. Their diameters are shown in the table.
(a) Because the sample size is small, the engineer must verify that the diameter is normally distributed and the sample does not contain any outliers. The normal probability plot and boxplot are shown. Are the conditions for testing the hypothesis satisﬁed?
(b) Construct a 95% conﬁdence interval to judge whether the golf balls conform to USGA standards. Be sure to state the null and alternative hypothesis and write a conclusion.
Answer to relevant QuestionsIt is suggested by college mathematics instructors that students spend 2 hours outside class studying for every hour in class. So, for a 4-credit-hour math class, students should spend at least 8 hours (480 minutes) studying ...Explain the procedure for testing a hypothesis using the P-value Approach. What is the criterion for judging whether to reject the null hypothesis? According to the Pew Research Center, the proportion of the American population who use only a cellular telephone (no land line) is 0.37. Jason conducts a survey of thirty 20- to 24-year-olds who live on their own and ﬁnds ...In 2010, the standard deviation SAT score on the Critical Reading Test for all students taking the exam was 112. A teacher believes that, due to changes to high school curricula, the standard deviation of SAT math scores has ...What happens to the probability of making a Type II error, β, as the level of signiﬁcance, α, decreases? Why?
Post your question