Question

Eight trials are simulated. The results are shown in the table.

Answer 1

Answer:

Margin of error for 95% = 2.895

Step-by-step explanation:

We are given a sample of size 8.

First let us find mean and std deviation for this sample.

Mean = sum/8 = 108.5

Variance = E(X^2)- Mean ^2 = 12

Std dev = sqroot of 12 = 3.464

When sample is used we use standard error instead of standard deviation to find margin of error.

Std error = std dev/sq rt n = 1.225

Since sample size is very small and <30 we can use t critical value to find margin of error.

n =8 hence df = 8-1 =7

t critical for two tailed at 95% = 2.363

Margin of error = t crit * std error

=2.363(1.225) = 2.895