Way hequency tables: mastery test
the organizers of a founder's day festival on main street surveyed local businesses to see if they would be offering any promotions to customers during the
festival. the table contains the data gathered.
promotions and business locations
free items special sales no promotions
total
21
located
on main street
located
one block away
located
2+ blocks away
total
19
12
18
75
37
130
match the statements about the number of businesses surveyed with the correct values.
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type here to search

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?