The mean height of women in a country (ages 20minus29) is 64.2 inches. a random sample of 50 women in this age group is selected. what is the probability that the mean height for the sample is greater than 65 inches? assume sigmaequals2.58. round to four decimal places.

0.0142

Step-by-step explanation:

Given : The mean height of women in a country (ages 20 - 29) is 64.2 inches.

i.e.

Also,

Sample size : n= 50

Let x denotes the height of women.

Then, the probability that the mean height for the sample is greater than 65 inches :-

Hence, the the probability that the mean height for the sample is greater than 65 inches = 0.0142

yess

step-by-step explanation:

idk whyy this is happening, i cant even read my notification bc i keep getting errors

~coco

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional