At the beach, 25% of people are on the boardwalk and 21% are on the sand. if the rest are in the water, what percentage of people are in the water?ya girl out!

All the people at the beach would be 100%

Subtract the percentage of people on the boardwalk and on the sand from 100%.

100% - 25% - 21% = 54% are in the water.

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;