Question

Find the right critical value for a 98% confidence interval for ? with n = 20.

a) 8.260
b) 37.566
c) 36.191
d) 7.633

Answer 1

The right critical value for a 98% confidence interval for ? with n = 20 is 2.101.

Step-by-step explanation:

To find the right critical value for a 98% confidence interval with a sample size of 20, we need to use the t-distribution. Since the sample size is small, we need to use the t-distribution instead of the z-distribution. The critical value can be found by looking up the t-value that corresponds to a 98% confidence level and a degrees of freedom of 19. From the table, the critical value is approximately 2.101.

So, the right critical value for a 98% confidence interval for ? with n = 20 is 2.101.