6)A market survey is conducted by your state legislator to determine the proportion of homeowners who would switch to a new “electrical energy supplier” if they had the opportunity afforded them by new state legislation. Of the 1,200 homeowners surveyed, 900 said they would switch. At 5% level of significance interpret the results if the legislator states that more than 2/3 of the homeowners would switch.Fereydoun NikpourBASIC STATISTICAL METHODS – Summer 2017Quiz 6Student’s name:1) The correlation between two variables is =.76 for a sample of 18 observations. Which of the following is a correct conclusion based on the data? Use the .05 significance level. a) Reject H0. There is a negative association between the variables. b) Do not reject H0. There is a negative association between the variables. c) Reject H0. There is a positive association between the variables. d) None of the above.
2) Which of the following is a correct conclusion if r = 0.81, p-value = 0.076, t = 7.1, and α = 2%?
3) A coffeehouse wishes to see if customers have any preference among 5 different brands of coffee. A sample of 200 customers provided the data below. Is there a brand preference if P-value is 0%??Brand 1 2 3 Customers 30 65 18 32 4 555