Teresa is maintaining a camp fire. she can keep the fire burning for 444 hours with 666 logs. she wants to know how many logs (y)(y)left parenthesis, y, right parenthesis she needs to keep the fire burning for 181818 hours. she assumes all logs are the same.
how many logs does teresa need to maintain the fire for 181818 hours?

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;