Let the test statistic z have a standard normal distribution when h0 is true. give the significance level for each of the following situations: a. , rejection region b. , rejection region c. h , rejection region z $ 2.88 or z # 22.88 a: m 2 m0 ha: m , m0 z # 22.75 ha: m . m0 z $ 1.88

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

what is the model?

step-by-step explanation:

your answer   is c

step-by-step explanation: