Over twenty years, it was found that the number of doctors of medicine, MD (in thousands), in the United States can be approximated by MD =
28.390+693
where t = 0 represents 1980. The
85-
776-120
number of doctors of osteopathy, DO (in thousands), can be approximated by DO =
65-21
a. Write an expression for the total number I of doctors of medicine (MD) and doctors of
osteopathy (DO). Simplify the result.

50x5=$250

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

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;