Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 496 and standard deviation 115. You choose an SRS of 100 students and average their SAT reading scores. If you do this many times, the mean of the average scores will be close to:. A. 115.
B. 115 / square root of 100 = 1.15.
C. 115 / square of 100 = 11.5.

Option C) 115 / square of 100 = 11.5

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 496

Standard Deviation, σ = 115

Sample size, n = 100

a) Mean of scores

b) The standard Deviation

Thus, the correct answer is

Option C) 115 / square of 100 = 11.5

Option C.  115 / square of 100 = 11.5.

Step-by-step explanation:

We are given that Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 496 and standard deviation 115.

An SRS of 100 students is chosen and average their SAT reading scores.

The z score normal probability is given by;

  Z = ~ N(0,1)

So, the mean of the average scores will be close to i.e.;

      = 115 / square root of 100 = = 115/10 = 11.5

answer: 12   they all have at least 28 days

step-by-step explanation: haha

3+3+3+2*2*2+29*12 = 365

step-by-step explanation: