Answer:
b
Step-by-step explanation:
D , because 28-9=21 and 21=x
Answer:
1. n + 34
2. n - 34
3. n × 34
Step-by-step explanation:
1. 34 more than a number n + 34
2. a number decreased by 34 n - 34
3. the product of a number and 34 n × 34
Answer: 9
Step-by-step explanation:
3-2x-3
2x-3=-6
3--6=3+6=9
Answer: Null hypothesis : 
Alternative hypothesis : 
Step-by-step explanation:
Let 
be the proportion of women using supplements and 
be the proportion of women who did not to have died during that period .
Then the set of hypothesis for testing if the proportion of women elderly women who use dietary supplements is different than those who do not will be :-
Null hypothesis : [∵ it takes equality sign]
Alternative hypothesis : [∵ it takes ≠ sign to show difference]
