An internet company conducts a global consumer survey to multinational companies understand different consumer attitudes throughout the world. within 30 countries, the researchers interview 1000 people aged 13-65. their sample are designed so that they get 500 makes and 500 females in each country.
a.) are they using simple random sample?
b.) what kind of design do you think they are using?

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;

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

copyright potato 2019.

its a i did it myself

step-by-step explanation: