Question 3 Part 1 A Student Is Taking A Multiple Choice Test Consisting Of Four Questions Each With Five Options For Ea 1 (41.65 KiB) Viewed 83 times
QUESTION 3 PART 1 A student is taking a multiple choice test consisting of four questions, each with five options for each question. The student selects the answers at random. a) This is a binomial distribution, what is the value of n and p for this question? b) What is the probability that the student will get at least three questions correct? c) Calculate the expected number of questions correct. PART 2 A sample of 150 people is selected for a survey, among the questions asked was "Do you like Statistics?" and "Do you live in Wollongong?". Of the 150 people, 100 said they like Statistics, 75 people said they like Statistics and also live in Wollongong (at the same time), 15 people said they don't like Statistics and also don't live in Wollongong (at the same time). Lives in Does not live Total Wollongong in Wollongong Ukes Statistics Does not like Statistics Total a) Fill in the above contingency table. b) Find the following probability, P(Likes Statistics Does not live in Wollongong) C) Are the events "Likes Statistics" and "Does not live in Wollongong" statistically independent? >
Week 10 Lecture Activity: Chapter 12 Linear Regression Analysis The output below refers to data taken from a clothing store that sells novelty t-shirts. Over a period of 21 weeks, the price of the t-shirts and quantity of t-shirts sold was recorded. SUMMARY OUTPUT Regression Statistics Multiple R 0.976609 R Square 0.953765 Adjusted R Square Standard Error 43.07461 Observations 21 10.951332 ANOVA df SS F Significance F 3.83127E-14 Regression Residual Total 391.9454 MS 727224.1 1855.422 1 19 727224.1 35253.02 762477.1 20 Standard Error 29.74254 0.487401 Coefficients 985.2239 -9.64937 Intercept Price Stat 33.12507 -19.7976 P-value 2.85E-18 3.83E-14 Upper 95% 1047.476 -8.62923 Lower 95% 922.9720 - 10.66951
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