Có 40 học sinh gồm 25 nam và 15 nữ. Hỏi có bao nhiêu cách chọn 4 học sinh trong đó có 1 nam và 3 nữ

idk

step-by-step explanation:

no he doesnt because "-16' is negatiive

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;

not me

step-by-step explanation:

i wish i did i would like to get a desert ghost ball python