Question

Assume that all grade sitt reages are to be standardized on a scale beteren 0 and 4. How many grze sitt averages must be detained so that the same man is within 0.01 the good measure that a 95% confidence level is desired. if using the range rule of thumb, standard deviation can be estimated as a range over for which equals 4-0 over four which equals one. Does the sample size seem practical?

Answer 1

To calculate the sample size required for a 95% confidence level and a margin of error of 0.01, we can use the formula: sample size (n) = (z * s) / E. Plugging in the values, a sample size of 196 is required.

Step-by-step explanation:

To calculate the sample size required for a 95% confidence level and a margin of error of 0.01, we can use the formula:

sample size (n) = (z * s) / E

Where: z is the critical value at the desired confidence level (1.96 for a 95% confidence level), s is the estimated standard deviation (in this case, 1), and E is the desired margin of error (0.01).

Plugging in the values:

n = (1.96 * 1) / 0.01

n = 196

Therefore, in order to achieve the desired confidence level, a sample size of 196 is required.