6 I Receive About 20 3 N 40 Robo Calls Per Week Note That 3 Is The Standard Deviation Based On 40 Weeks A As 1 (22.78 KiB) Viewed 34 times
6 I Receive About 20 3 N 40 Robo Calls Per Week Note That 3 Is The Standard Deviation Based On 40 Weeks A As 2 (26.9 KiB) Viewed 34 times
6. I receive about 20 ± 3 (n = 40) robo-calls per week. (note that 3 is the standard deviation based on 40 weeks) (a) Assuming that the calls are random, what is the probability that I'll receive exactly 15 robo-calls next week? (b) What is the probability that I'll receive fewer than 15 calls next week? (c) Next month, how likely am I to receive fewer than 60 calls? (e)
During the first week of July, I received only 12 calls. Should I assume that the callers left for the 4th of July holiday, or is an extreme value such as 12 calls likely based on chance alone? (f) Based on data I collected over 40 weeks, do the calls appear to be aggregated, random, or evenly distributed? Calculate a statistic to support this answer.
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