Suppose a random sample of 64 men has a mean foot length of 27.5 cm with a deviation of 2 cm. construct a 95% confidence interval for the mean of the population.

The 95% on the z-table is 1.96.

Now find the standard error of the mean by dividing standard deviation by the square root of the sample:

2 / √64 = 0.25

Multiply the standard error by the z-table :

0.25 x 1.96 = 0.49

Now add and subtract that from the mean:

27.5 - 0.49 = 27.01 = 27

27.5 +0.49 = 27.99 = 28

The answer is: 27 ≤ u ≤ 28

a

step-by-step explanation:

rurbrbrjrnrbjr

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: