SCM 200 Study Guide - Midterm Guide: Upper And Lower Bounds, The Bs, Business Cycle

• School: PSU
• Department: Supply Chain Management
• Course: SCM 200
• Professor: M A R I L Y N B L A N C O

Document Summary

Topic 14 confidence interval for population proportion (qualitative data) We do not know , so we put p in its place. 2 outcomes use p or (qualitative data) Topic 15 hypothesis test for one population proportion (qualitative data) Testing a population proportion: step 1: when we have qualitative data, and we are testing a population proportion, the null and alternative hypotheses are: H0: = 0 (or or : pattern: . 34 < < . 66 we are 95% confident that the proportion of employees interested in working one day per week from home is between 34% and 66% . Selecting the sample size to estimate a population proportion: to achieve a desired margin of sampling error e for a given level of confidence set by z, we can solve: Less precise more precise: we solve the above equation for n and we obtain: (cid:1831)=(cid:1878) (cid:4666)(cid:883) (cid:4667) (cid:1866) (cid:1866)= (cid:4666)(cid:883) (cid:4667)[(cid:1878)(cid:1831)](cid:2870) Ha: 0 (or < or >)