Colin is buying dirt to fill a garden bed that is a 9 ft by 16 ft rectangle. if he wants to fill it to a depth of 4in., how many cubic yards of dirt does he need? if dirt costs $25 per yd(cubed), how much will the project cost? (hint: 1yd(cubed)=27 ft(cubed). the answer i got is $1600. correct me if in wrong

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;

50-60=10

step-by-step explanation: