BMGT 230 Lecture Notes - Lecture 16: Null Hypothesis, Consumer Reports, Test Statistic
28 Mar 2017
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From a random sample this year they want to know if the proportion has changed. Ha: p not = to . 4: last year 42% of employees enrolled in a least one wellness class at the (cid:272)o(cid:373)pa(cid:374)(cid:455)"s site. Using a survey, they want to know if a greater percentage is planning to take a wellness class this year. Ha: p>. 42: a politi(cid:272)al (cid:272)a(cid:374)didate (cid:449)a(cid:374)ts to k(cid:374)o(cid:449) fro(cid:373) re(cid:272)e(cid:374)t polls if she"s going to garner a majority of (cid:448)otes i(cid:374) the (cid:374)e(cid:454)t (cid:449)eek"s ele(cid:272)tio(cid:374) Ha: p>. 5: consumer reports discovered that 20% of a certain computer model had warranty problems over the first three months/ from a random sample, the manufacturer wants to know fi a new model has improved that rate. Ha: p > . 6: recently, 20% of cars of a certain model have needed costly transmission work after being driven between 50,000 and 100,000 miles. The manufacturer hopes that the redesigns of a transmission component has solved this problem.
