Statistics

SUMMER 2021 STATISTICS PRAC X + X C File | D:/UCC%20Summer%202021/MTH201%20-%20Introduction%20to%20Business%20and%20Economic%20Statistics(Summer%20%231%202021)... 1 of 5 Q + [ Page view | A Read aloud | V Draw ~ Highlight ~ Erase QUESTION 1 I. The masses, to the nearest gram (g), of a random sample of 100 letters passing through Montego Bay Post Office No. 1 are in the table below. Mass (g) 40-59 60-69 70-79 80-89 90-99 100-149 150-159 Number of 10 25 46 6 4 letters Calculate to two decimal places: a) the mean b) the standard deviation QUESTION 2 Research finds that of the students entering a degree programme, 70% will successfully complete it. In 2018, 15 students commenced the course. Calculate the probability that: i. All 15 students will successfully complete the course. ii. Only one student fails iii. No more than two students fail. iv . At least two students fail. QUESTION 3 Type here to search O 11:04 AM 30'C Rain ~ 9 ( D ( () 7/15/2021SUMMER 2021 STATISTICS PRAC X + X C File | D:/UCC%20Summer%202021/MTH201%20-%20Introduction%20to%20Business%20and%20Economic%20Statistics(Summer%20%231%202021)... 2 of 5 Q +2 0 Page view | A Read aloud | V Draw Y Highlight ~