In a random sample of 49 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3410 with a standard deviation of $2571. construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns.

$2948 and $4030

Step-by-step explanation:

The CI is sample mean +/- s/sqrt(n)

t(0.95,df=63 critical values are |t|>1.669

90% CI is 3489+/-1.669*(2595/8) since sqrt(64)=8

the interval is 541.38

round to 541

the interval is 3489+/-541

($2948,$4030) is the 90% CI for the mean.

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (