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week13-2up_001

# week13-2up_001 - Offers any amount Offers \$5 Offers any...

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STA 2023 c D.Wackerly - P-value Analogy 1 Garage sale, I want to go for coffee and tell you that “the smallest amount that I will take for this jacket is \$6”. If leave. What do you do if someone: Offers \$15? Offers \$7? Offers any amount \$6? Offers \$5? Offers any amount \$6? Same scenario, but I say that I want at least “something between \$5 and \$10” Choices: Sell, Not Sell, Can’t tell. Offers \$15? Offers \$10? Offers any amount \$10? Offers \$7? Offers any amount between \$5 and \$10? Offers \$4? Offers any amount \$5? STA 2023 c D.Wackerly - Lecture 19 252 Thought: Eagles may soar, but weasels aren’t sucked into jet engines. Assignments Today : P. 347–351 (Sec. 8.5), Tuesday: Exer. 8.59, 8.61, 8.67–69, 8.116, 8.119 Wednesday : P. 288 – 393 (Sec. 7.2), P. 341 – 345 (Sec. 8.4) For Thursday: Exer. 7.27, 7.30, 7.33, 7.80, 7.81, 8.49, 8.50, 8.53, 8.54, 8.56, 8.57, 8.105 – 108, 8.111, 8.117 LAST QUIZ Tuesday, April 9, regular 20 point quiz OPTIONAL Up to 20 BONUS POINTS - will contain 5 EXTRA questions from Exam 2, 4 pts each, no computation. Answers same, but re-ordered. Pts. earned added to exam score.

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STA 2023 c D.Wackerly - Lecture 19 253 Last Time: Large Sample Tests about RR p-value larger score OR smaller score OR or (tail area) Test Statistic Estimator and Standard Error from Formula Sheet Hypothesized Value from NULL HYPOTHESIS STA 2023 c D.Wackerly - Lecture 19 254 Ex. : #8.68, p. 352 In a “Pepsi Challenge”, 100 Diet Coke drinkers were given unmarked cups of both Diet Coke and Diet Pepsi. indicated that they preferred the taste of Diet Pepsi. Is there sufficient evidence to indicate that a majority of the Diet Coke drinkers will select Diet Pepsi in a blind taste test? true proportion of Diet Coke drinkers who would select Diet Pepsi in a blind taste test. Large Sample Tests About (Section 8.5) Interested in a POPULATION that contains an UNKNOWN but FIXED PROPORTION of items with a particular attribute . Recall the BINOMIAL EXPERIMENT. the proportion of Diet Coke drinkers who select Diet Pepsi in a blind taste test. the proportion of batteries that fail before guarantee expires.
STA 2023 c D.Wackerly - Lecture 19 255 GOAL : Test hypotheses about based on a “large” number of trials # of trials ; # of in the trials Estimate for in the sample sample size If is “large” has an APPROXIMATE NORMAL distribution That is has an approximate STANDARD NORMAL distribution. STA 2023 c D.Wackerly - Lecture 19 256 Consider testing a fixed particular value of versus OR OR if is the null hypothesis, TEST STATISTIC estimator hypothesized value standard error Estimator and Standard Error from Formula Sheet Hypothesized Value from NULL hypothesis

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week13-2up_001 - Offers any amount Offers \$5 Offers any...

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