A disadvantage of stratified sampling is: Group of answer choices that it requires you to have some prior knowledge about the elements in the population prior to drawing the sample. that it denies you the use of probability theory. that it usually increases the standard error. that it usually requires samples that are larger in size than those required by simple random sampling.

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;

answer: a) 56% women

b)44% men

step-by-step explanation: