Wednesday

November 26, 2014

November 26, 2014

Posted by **rose** on Wednesday, December 5, 2012 at 2:51am.

is approximately N(; 100). Let X1;X2; : : : ;Xn be a random sample of such IQ

scores.

(a) How large should n be so that a 90% con dence interval for with maximum

error " = 1 is [ x 1:645(10)=

p

n ; x + 1:645(10)=

p

n ]?

(b) Verify your answer empirically. In particular, simulate 50 random samples

of size n from the normal distribution N(110; 100). Do approximately 90%

of these samples yield a con dence interval that contains = 110?

**Answer this Question**

**Related Questions**

Math (Statistics) - The SAT scores of a certain population of students are ...

Statistics - The home states of a certain group of people are distributed as ...

statistics - Data shows that 88% of the people in a certain population are right...

statistics - Data shows that 93% of the people in a certain population are right...

statistics - Sign in Assume that the mean score on a certain aptitude test ...

statistics - sat scores around the nation tend to have a mean score of about 500...

statistics - A specific study found that the average number of doctor visits per...

statistics - Suppose that the test scores for a college entrance exam are ...

statistics college - SATI SCORES AROUND THE NATION HAVE A MEAN SCORE AROUND 500 ...

statistics - A specific study found that the average number of doctor visits per...