30 Randomly selected took the calculus final .if the sample mean was 95 and the standard deviation was 7.4 with a 99% ofconfidence interval mean...

30 Randomly selected took the calculus final .if the sample mean was 95 and the standard deviation was 7.4 with a 99% ofconfidence interval mean score of all students.

' The t-score corresponding to a 99% confidence level and 29degrees of fi'eedom is 2.756.The margin of error is:• sE • l'a/z7.4 'E = 2.756mJE = 3.723The confidence interval f - E <...