A manufacturing plant earned $80 per a man-hour of labor when it opened. Each year, the plant earns an additional 6% per man-hour.
Which expression gives the amount the plant earned per a man-hour of labor 3 years after it opened?
Choose 1
80(1 + 0.06)(1 + 0.06)(1 +0.06)
80+ 0.06 0.06 0.06
80 + (1 +0.06)(1+0.06)(1 +0.06)
80 . 0.06 0.06 0.06

50

step-by-step explanation:

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;