Arandom sample of 130 students is chosen from a population of 4,500 students. if the mean iq in the sample is 120 with a standard deviation of 5, what is the 99% confidence interval for the students' mean iq score? answers given below: 118.87−121.13 107.12−132.88 125−135 115−125

Answer with explanation:

Total Sample Size = 4,500 Students

Sample Chosen(n) = 130 students

Mean IQ of the Sample,

Standard Deviation,

To Calculate 99% confidence interval for the students' mean IQ score, we will calculate,

Formula for Confidence Interval

The Value of Confidence interval will lie between

⇒  120 - 1.13 to 120 +1.13

⇒118.87 to 121.13

Option A:  118.87−121.13