14. The population of polar bears in the world is decreasing and can be modeled by the function t P(t)18600(.91). where t is the amount of years. Using this function, answer the following:

a) What is the initial population of polar bears?

b) What percent rate is the population decreasing by per year?

c) How many polar bears will there be in 5 years?

d) Which of the following choices approximately represents the amount of years it will be for the polar bear population to reach 8,000?
(3) 9
(2) 7
(1) 5
(4) 10

D.

Step-by-step explanation:

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;