The population of a town is 2500 and is decreasing at a rate of 3.5% per year. Write a exponential decay function to find the po
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Answer:
(A) The minimum sample size required achieve the margin of error of 0.04 is 601.
(B) The minimum sample size required achieve a margin of error of 0.02 is 2401.
Step-by-step explanation:
Let us assume that the percentage of support for the candidate, among voters in her district, is 50%.
(A)
The margin of error, <em>MOE</em> = 0.04.
The formula for margin of error is:
The critical value of <em>z</em> for 95% confidence interval is:
Compute the minimum sample size required as follows:
Thus, the minimum sample size required achieve the margin of error of 0.04 is 601.
(B)
The margin of error, <em>MOE</em> = 0.02.
The formula for margin of error is:
The critical value of <em>z</em> for 95% confidence interval is:
Compute the minimum sample size required as follows:
Thus, the minimum sample size required achieve a margin of error of 0.02 is 2401.
Answer:
Ordering of objects from heaviest to lightest are ⇒ <u> school bus weight 9 tons, elephant 5,500 kilograms, horse 1,100 pounds and grand piano 15,840 ounces.</u>
Step-by-step explanation:
Given:
School bus weight = 9 tons.
Horse = 1,100 pounds.
Elephant = 5,500 kilograms.
Grand piano = 15,840 ounces.
Now, order these objects from heaviest to lightest.
So, we need to take a common unit to order the items:
Thus, we take pounds as a common unit.
16 ounces = 1 pound.
1 kilogram = 2.2 pounds.
1 ton = 2,000 pounds.
Then, we calculate the weight of all items in pounds:
School bus 9 tons
Horse 1100 pounds
Elephant 5500 kilograms
Grand piano 15840 ounces
According to question:
Ordering from heaviest to lightest:
<em>School bus = 18000 pounds, elephant = 12100 pounds, horse = 1100 pounds and grand piano = 990 pounds.</em>
Therefore, ordering of objects from heaviest to lightest are ⇒ school bus weight 9 tons, elephant 5,500 kilograms, horse 1,100 pounds and grand piano 15,840 ounces.