STAT 1000 Lecture 34: STAT1000, lec 34

• School: University of Manitoba
• Department: Statistics
• Course: STAT 1000
• Professor: Zenaida Mateo

Document Summary

Testing of hypothesis: p-value method, if p-value = 0, reject ho at = (cid:1004, confidence interval method, requirement: +. = (cid:1005)(cid:1004)(cid:1004)% , 5% + 95% = 100% *use c. i. method is fine. Voltage is approximately normal with = 0. 25 volts. A manufacturer is interested in output voltage of a power supply used in a computer. the voltage to be anything other than 5 volts, on average. Test this claim at the 5% level of significance. We take a srs of 8 computers and found the mean of those samples to be 4. 83 volts. Test on : (cid:1004) : = 5 , : (cid:1009)- two sided test. = / = (cid:1008). (cid:1012)(cid:1007) (cid:1009) (cid:1004). (cid:1006)(cid:1009)/ (cid:1012) = -1. 92. Lecture use : (4. 602, 5. 058) *(cid:271)ut it"s the sa(cid:373)e. I(cid:374)(cid:272)e the(cid:396)e is a (cid:862)(cid:374)ot e(cid:395)ual to(cid:863) i(cid:374) the alte(cid:396)(cid:374)ati(cid:448)e (cid:449)e a(cid:396)e looki(cid:374)g fo(cid:396) the a(cid:396)ea i(cid:374) either tail. Because this is a two sided test we take 2(0. 0274) = 0. 0548.