Answer:
A. 0.0049
B. Yes
Step-by-step explanation:
Sample proportion = 0.64
N = 1000
Population proportion = 0.60
We solve for standard deviation
= √p(1-p)/n
= √0.60(1-0.60)/1000
= √0.60x0.40/1000
= √0.00024
= 0.0155
A.
The probability of sample >=0.64
Z>=0.64-0.60/0.0155
Z >= 0.04/0.0155
So z >= 2.5806
Using excel this equal to 0.0049
0.0049 is probability of sample proportion being 0.64 at least.
B.
This answer in a shows that than 60% of households in the united states income class purchased life insurance last year.
Answer:
a) Children total 37, Teens total 64, Adults total 50, Chocolate total 70, Vanilla total 47, Strawberry total 34
b) 15
c) 15
d) 49/64
Try to ask the teacher for help. I am sorry for the person that did not help you.
300% if 5 is 15. 30% of 5 is 1.5 not 15. That is an error. Hope this helps!
