MAT 222 Study Guide - Midterm Guide: Null Hypothesis, Statistical Hypothesis Testing, Test Statistic
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1: (15 points) safedriving group claims that the mean speed of drivers on a highway exceeds the posted speed limit of 65 miles per hours (mph). {a} according to the report (april 10, 2013), 46% of 1,022 adults in the sample agreed with (i) that the u. s. should prioritize environmental protection when the goals conflict. Suppose that 140 among 246 adults who are 18-29 years old and 146 among 317 adults who are 30-49 years old answered "environmental protection" as more important. Test if there is a signifirnut difference between the two age groups in the proportions of those who would say that the environmental protection is more important. Use o = 0. 05. (more space on page 4) Anova f-test, t. -tp. st for slope of regression line, Find the p-value, either exact or approximate, and draw your conclusion nt the 0. 01 level of significance.
