You know that 1 7 = 0142857 . . Can you predict what the decimal expansions of 2/ 7 , 3/ 7 , 4/ 7 , 5/ 7 , 6/ 7 are, without actually doing the long division? If so, how?

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

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;