A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95%

confidence interval will be computed from a sample of size 100 drawn from the same population.

Choose the best answer to fill in the blank: The interval from the sample of size 400 will be approximately as the interval from the sample of size 100.

i. one-eighth as wide ii. one-fourth as wide iii. one-half as wide iv. the same width v. twice as wide vi. four times as wide vii. eight times as wide