Avideo game company surveys a random sample of 250 gamers who report
annual income of $50,000. the company finds that the average gamer
spends $206 a year on games, with a standard deviation of $12.
another company is also interested in the amount game consumers spend,
and surveys a random sample of 225 gamers with a verified yearly income of
$50,000. the company finds that the average gamer spends $250 a year on
games, with a standard deviation of $15.
why is the second survey more believable than the first?
o
a. lack of randomization in the first survey
o
b. likelihood of those in the first survey to lie about the amount they
make
o
c. size of the sample for the second survey
o
d. size of the confidence interval for the second survey