Answer:
Explanation:
Experiments were performed for 240 people, 60 people test positive.
Step 1: we calculate the sample proportion; p= 60/240= 0.25.
Step 2: calculate the standard error for the sample, which is the square root of sample proportion,p = p(1-p)/n, n=100
0.25(1-0.25)/100
= 0.04.
Step 3: calculate the test statistics; assuming the hypothesis test percentage is 25%
Then, we say 0.25-1=0.75
-0.75/0.04
= -1.875.
In particular, the sample results are -1.875 standard error.
Probability of Z is less than -1.875.
Look up it value in the Z table
Answer:
About 250 ; 2000 bicycles
Explanation:
Opportunity cost simply means the loss incurred on a certain option when the alternative opruoonos chosen.
The opportunity cost of increasing shoe production from 10,000 to 20,000 pairs
The value of 20,000 (x axis) on the y axis is about 3750
Value of point A in the y - axis = 4000
Hence opportunity cost = (4000 - 3750) = 250 bicycles
B.)
The opportunity cost of increasing shoe production from 50,000 to 60,000 pairs
The value of 60,000 (x axis) on the y axis is about 0
Value of point B in the y - axis = 2000
Hence opportunity cost = (2000 - 0) = 2000 bicycles
Answer:
Investment Y
Explanation:
Investment Y pays compound interest, which earns interest compared to simple interest over time. In compound interest, the interest earned in the period is added to the principal, thereby increasing the principal amount for in the next period. It means that the interest earned also earns interest.
Compound interest increases the principal amount at the beginning of every period. As a result, the interest earned will be higher every year. Investment X earns simple interest. In simple interest, the principal amount remains is constant throughout the investment period. The interest in simple is constants throughout the period. Compound interest has higher returns compared to simple interest.
They are called source documents.