Q.2.1 It has been found that 1 out of every 10 visitors to a museum buys something from the gift shop. If we randomly select a sample of 12 visitors to the museum, what is the probability that no more than three of the visitors will buy something from the gift shop? Interpret your answer.
Q.2.1 It has been found that 1 out of every 10 visitors to a museum buys something
from the gift shop. If we randomly select a sample of 12 visitors to the
museum, what is the probability that no more than three of the visitors will
buy something from the gift shop? Interpret your answer.
Q.2.2 It has been found from experience that an exclusive clothes shop makes an
average of four sales every fifteen minutes. If we randomly select a fifteen
minute period, what is the probability that the shop will make:
Q.2.2.1 More than one sale? Interpret your answer.
Q.2.2.2 Less than three sales? Interpret your answer.
Q.2.3 It has been found that the time taken to complete an emotional intelligence
test is
standard deviation (σ) of 3.5 minutes. What is the probability that a randomly
selected person will take:
Q.2.3.1 Between 15 and 17 minutes to complete the test? Interpret your
answer.
Q.2.3.2 More than 20 minutes to complete the test? Interpret your
answer.
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