A local animal rescue organization receives an average of 0.55 rescue calls per hour. Use the Poisson distribution to find the probability that during a randomly selected hour, the organization will receive fewer than two calls.
A) 0.317 B) 0.894 C) 0.106 D) 0.087
Q. 2What is the relative frequency of clear days that are warm?
A) .4 B) .6 C) .2 D) .8
Q. 3An online retailer receives an average of five orders per 500 hits on its website. If it gets 100 hits on its website, find the probability of receiving at least two orders. Use the Poisson distribution.
A) 0.9048 B) 0.9596 C) 0.2642 D) 0.1839
Q. 4If the events A and B are mutually exclusive, then P(A B) = 0.
Indicate whether the statement is true or false
Q. 5The null hypothesis in the runs test is that the sequence of observations is __________ .
Fill in the blank(s) with correct word
Q. 6A customer service firm receives an average of three calls per hour on its toll-free number. For any given hour, find the probability that it will receive at least three calls. Use the Poisson distribution.
A) 0.4232 B) 0.1891 C) 0.5768 D) 0.6138
Q. 7Identify the two qualitative variables measured in this study.
A) warm and cold B) warm and clear
C) temperature and sky condition D) clouds and clear
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