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.
6-3=3
2/8-5/8=3/8
you would have to change the denominator
The correct is the second choice
1. Check the prices of phones from different stores.
2. Do some research to see what is the average cost of the phone.
3. Check for possible discounts.
Hope this helps :)
Answer:
y=2x
Step-by-step explanation:
rise/run 2/1
