The population of a city was 60,000 in 2015. In 2016, the population of the city was 63,000. The percent increase in the populat
ion from 2015 to 2016 was the same as it was from 2016 to 2017. What was the population of the city in 2017?
1 answer:
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Answer:
78.81%
Step-by-step explanation:
We are given;
Population mean; μ = 149
Sample mean; x¯ = 147.8
Sample size; n = 88
standard deviation; σ = 14
Z-score is;
z = (x¯ - μ)/(σ/√n)
Plugging in the relevant values;
z = (147.8 - 149)/(14/√88)
z = -0.804
From z-distribution table attached, we have; p = 0.21186
P(X > 147.8) = 1 - 0.21186 = 0.78814
In percentage gives; p = 78.81%
