If a city with a population of 150,000 doubles in size every 34 years, what will the population be 68 years from now?

In 68 years, the population will be 600,000

Step-by-step explanation:

Population of the city is 150000

It doubles every 34 years, that is 34 years from now, it will be

150000 × 2 = 300000

In 68 years, which is another 34 years, it will be double of 34 years or 4 times the original population, that is

300000 × 2 = 600000, or

150000 × 4 = 600000

i think the answer is b.

step-by-step explanation:

not 100% sure though.

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;