In a two-tailed hypothesis test the test statistic is determined to be Z = -2.5. The p-value for this test is: a. 0.0062
b. -1.25
c. 0.4938
d. 0.025
e. 0.0124

e. 0.0124

Step-by-step explanation:

Given that:

In a two-tailed hypothesis test, the  test statistic is determined to be Z = -2.5

The p-value for this test can be determined from the Z tables at Z = -2.5

Using the EXCEL FUNCTION ( = NORMDIST (-2.5) )

Since the hypothesis is two-tailed, then;

The p-value =  2 × (= NORMDIST (-2.5))

The p-value =  2 × 0.00620

The p-value = 0.0124

The EXCEL FUNCTION computation can be seen in the attached file below.

h df tyjgtyj ttd y ytkgfty ty

step-by-step explanation:

tyty jry j y yj yttj yhgtyj y ghyj ytthj

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