According to the Harris Poll, 70 % of dog owners buy their dogs holiday presents. Suppose you select a random sample of 25 dog o
wners from among the population of 30 dog owners at the dog park. Let X be a random variable equal to the number of dog owners who buy their dogs holiday presents.
1 answer:
The concluding part is missing in the question and it says we should find the probability that 2 of the people selected cook meals for their dogs
Answer:
P(x2) = 0.1857
Step-by-step explanation:
N = 30; since there are 30 people that own dogs
k = 21; since there are 70% of dog owners who buy gifts for their dogs
n = 25; since we randomly select 25 people among the dog owners
x = 2; since we randomly select 2 people who cook meals for their dogs
Therefore, for clarity sake the solution is in the attachment ;
And the probability is 0.1857
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Answer:
Original price of car = $20,000
Step-by-step explanation:
Let the original price of the car be 'x' dollars.
Given:
Here, the depreciation of the car is occuring exponentially as the value depreciates to half in every four years.
Worth of car after 8 years = $5000
Value after depreciation in 4 years = Half of original value =
So, value of car after depreciation in another 4 years = Half of the value after 4 years =
Therefore, final depreciated value after 8 years is .
But, as per question, final depreciated value is $5000. Thus,
Therefore, the original price of the car was $20,000.