Answer:
2g yy 78
Step-by-step explanation:
ACE. Just find the difference between the numbers, and divide the numerator and denominator by it to see if you get 3/4
12/100 of a day, which reduces to 3/25 of a day.
Answer:
So on this case the only option that satisfy the calculated statistic is:
z=-0.42
Step-by-step explanation:
Assuming this complete problem: "In a 2-sample z-test for two proportions, you find the following:
^P1 = 0.32, (n,1)=50
^P,2= 0.36, (n,2)=50
Find the test statistic you will use while executing this test:
z=-0.67
, z=±1.64
, z=-1.96
, z=0.34
, z=-0.42"
Solution to the problem
Data given and notation
sample 1 selected
sample 2 selected
represent the sample proportion for 1
represent the sample proportion for 2
z would represent the statistic (variable of interest)
represent the value for the test (variable of interest)
We need to apply a z test to compare proportions, and the statistic is given by:
(1)
Or equivalently:
(1)
Where
Calculate the statistic
Replacing in formula (1) the values obtained we got this:
So on this case the only option that satisfy the calculated statistic is:
z=-0.42