Bob is testing his friend on how smart he is. He wrote the following: My grandfather is 57, and adopted my mother from birth on Tuesday, March 19, 1996. My mother had me when she was 18. How old am I?

2014 is when she had him and he is 7 i think i got it right

Step-by-step explanation:

i think it is 70

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;