Question 1 Not yet answered Marked out of 1.00 p Flag question Which of the following events are independent? (i) Buying

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Question 1 Not Yet Answered Marked Out Of 1 00 P Flag Question Which Of The Following Events Are Independent I Buying 1 (30.78 KiB) Viewed 96 times

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Question 1 Not Yet Answered Marked Out Of 1 00 P Flag Question Which Of The Following Events Are Independent I Buying 5 (33.85 KiB) Viewed 96 times

Question 1 Not yet answered Marked out of 1.00 p Flag question Which of the following events are independent? (i) Buying a lottery ticket and finding a 50 baisa coin on the floor. (ii) Owning a dog and growing your own herb garden. (iii) Boarding a plane first and finding a good seat. (iv) Buying ten lottery tickets and winning the lottery. (V) Winning the lottery and running out of milk. a. (i), (ii) and (v) b. (iii) C. (iv) d. All of the above

The equation of the regression line between the number of absences (x) and their final grades (y) in % from a statistics class is given by: y' = 85.3 - 9.25 x The correct statement that represents this equation is: a. When the number of absences increases by one class, then on an average final grades decreases by 85.35%. b. When the number of absences increases by one class, then on an average final grades decreases by 5.35%. c. When the number of absences increases by one class, then on an average final grades decreases by 9.25%. d. When the number of absences decreases by one class, then on an average final grades decreases by 75.35%.

Question 3 Not yet answered Marked out of 1.00 p Flag question The mean of 10 items is 6 and the mean of other 5 5 items is 6. Then the combined mean is: a. 6 b. 14 C. 5 d. 11

Question 4 Not yet answered Marked out of 1.00 p Flag question Ahmed takes a multiple choice quiz in his statistics class. The quiz has 10 questions; each has 4 possible answers, only one of which is correct. Ahmed did not study for the quiz, so he guesses independently on every question. What is the probability that Asila answers exactly 2 questions correctly? a. 0.28157 b. 0.23568 C. 0.25028 d. 0.20133

Question 5 Not yet answered Marked out of 1.00 Flag question What is the smallest sample size required to provide a 85% confidence interval for a mean, if maximum possible error no longer than 3 cm? You may assume that the population is normal with variance 25 cm . 2 a. 18 b. 19 C. 9 d. 6