If the 90% confidence interval of the mean of a population is given by 45 3, which of the following is correct?

i. There is a 90% probability that the sample mean is in the interval.

ii. There is a 90% probability that the population mean is in the interval.

iii. There is a 90% probability that a data value, chosen at random, will fall in the interval.

• a. Only i.
• b. Only ii.
• c. Only iii.
• d. Only i. and iii. (and not ii.)
• e. Neither i., ii. nor iii. are correct