There are 250 people in a mueseum 2/5 of the people are girls 3/10 of 250 are boys how many adults are there

250/5 = 50

50 X 2 = 100

250/10 = 25

25 x 3 = 75

25 + 75 = 100

250-100 = 150

150 adults

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;

answer: 800

step-by-step explanation: