⟩ You still have the same data (a sample size of 7, a mean of 8 and a standard deviation of 4.2) plus the standard error. Next how would you calculate the 95% confidence intervals?
1. To work out the 95% confidence interval you would have to multiply the standard error by 1.96.
2. To work out the 95% confidence interval you would have to multiply the square root of the sample size.
3. To work out the 95% confidence interval you would have to multiply the standard error by the standard deviation.
4. To work out the 95% confidence interval you would have to multiply the standard error by 95.
Answer: To work out the 95% confidence interval you would have to multiply the standard error by 1.96.
