Answer:
A.Because the confidence interval includes zero, the researcher can conclude the proportion of men and women who exercise regularly is the same.
Step-by-step explanation:
When the null value is contained in the confidence interval we tend to fail to reject the null hypothesis.
Here, the hypothesis according to scenario are
Null hypothesis: The Proportion of men and women who exercise regularly is same i.e. p1-p2=0.
Alternative hypothesis: The proportion of men and women who exercise regularly is not the same i.e. p1-p2≠0.
The null value here is 0. As the confidence interval is (-0.154,0.138) and it contains 0, so we fail to reject the null hypothesis and conclude that the proportion of men and women who exercise regularly is the same.
We count it like this: 25%*80=
=
(% is equal to the same number divided by 100)
=
(simplyfying)
=
(simplyfying)
=20
20 is 25% of 80
Answer:
Step-by-step explanation:
circle
Answer:
Step-by-step explanation:
multiply first,
so 2√6 x √8 = 2√48 (because when radicals are multiplied we add them)
so
2√48 can be simplified to 8√3 and 2√12 can be simplified to 4√3
8√3+4√3=12√3