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.
convert both dimensions to feet
1 mile = 5280 feet so 1/2 mile = 5280/2 = 2640 ft
1 yard = 3 ft so 600 yards = 600*3 = 1800 feet
now calculate area = 2640*1800 = 4752000 square feet
acres = square feet / 43560 so 475200/43560 = 109.09 acres
So first we add the total pounds of harvested crop by the total number of hours:
48/24 which is 2
So 2 pounds of crop is harvested every hour, assuming that the working is constant throughout all four workers.
So:
Employee -
A: 12 pounds
B: 8 pounds
C: 12 pounds
D: 16 pounds
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