What is most likely true about the population of 250 grandparents
2 answers:
Answer: More grandparents prefer using hard copy rather than a digital copy.
Step-by-step explanation:
Given: The total number of grandparents surveyed = 250
which is 10 times n where n is the sample size = 25
i.e. we need to multiply 10 to each number given in picture.
Therefore, the number of grandparents surveyed prefer digital copy =
The number of grandparents surveyed prefer digital copy =
Clearly 210>40
Therefore, More grandparents prefer using hard copy rather than a digital copy.
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Answer: The probability that both televisions work is 0.5625 .
The probability at least one of the two televisions does not work is 0.4375.
Step-by-step explanation:
Given : Number of televisions received in shipment= 12
Number of defective televisions received in shipment= 3
Then proportion of defective televisions =
Using binomial probability formula, the probability of getting success in x trials is given by :-
If two televisions are randomly selected, then the probability that both televisions work will be :-
The probability at least one of the two televisions does not work will be :-