A random sample of 150 students is chosen from a population of 5,000 students. If the mean IQ in the sample is 110 with a standard deviation of 10, what is the 95% confidence interval for the students' mean IQ score?

100−120

107.9−112.1

108.4−111.6

108.66−111.34

Question

A random sample of 150 students is chosen from a population of 5,000 students. If the mean IQ in the sample is 110 with a standard deviation of 10, what is the 95% confidence interval for the students' mean IQ score?

 100−120

 107.9−112.1

 108.4−111.6

 108.66−111.34

kimberly_pr · Answer

@agent0smith 
@hartnn 
@welshfella

agent0smith · Answer

Know the formula for confidence interval?

kimberly_pr · Answer

Hmmm, I don't think so

kimberly_pr · Answer

Can you help me with another question?

kimberly_pr · Answer

What are the amplitude and midline?

 Amplitude: 1; midline: y = 1

 Amplitude: 2; midline: y = 1

 Amplitude: 2; midline: y = 2

 Amplitude: 2; midline: y = 0

agent0smith · Answer

lol that's a completely diff question 

Midline = the line that goes through the middle, horizontally. Find where it's located.

Amplitude is half the distance from the top of the function to the bottom.

kimberly_pr · Answer

Got it, thanks :)