The heights of women are normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches.
The tallest 10% of females are taller than what height?
- 68.2 inches
- 70 inches
- 69.45 inches
- 65.25 inches
Identify the score corresponding to the indicated percentile.
The length of human pregnancies (with no complications) from conception to birth varies according to a normal distribution with mean 260 days and standard deviation 10.
Only ten-percent of pregnancy lengths are less than what value?
Options:
- 259 days
- 247 days
- 250 days
- 261 days
- 273 days