3. It is predicted that by 2050, there will be 1010 people living on Earth. At that time, it is
predicted there will be approximately 1012 trees. How many trees will there be for
each person?

about 1.0019802

Step-by-step explanation:

it is correct use the calculator.

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;

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: