you can figure these out at
http://davidmlane.com/hyperstat/z_table.html
2a) assume that adult males have footless which are normally distributed with mean 24.6 cm and standard deviation 1.05 cm. Calculate the probability that an adult male has a foot length is greater than 27 cm.
My answer - 2
2b) assume adult females have foot lengths which are normally distributed with mean 22.8 cm and standard deviation 0.89 cm. Calculate the percentage of adult female populated that has foot lengths between 22 and 25.
How would I tackle part 2b?
2c) a random sample of 10 adult females are selected. Find the probability that the sample men a is less than 22.9 cm
How would I do part c as well?
Please help
Thankyou
1 answer
1 answer