Mathematics, 13.04.2021 04:00 vanessagomezcx
2. A marketing firm is trying to estimate the proportion of potential car buyers that would consider
purchasing a hybrid vehicle
a. The firm would like their pilot study to have a margin of error that is no more than 4%. How many
people should be in the pilot study in order to meet this goal at the 95% confidence level?
In a sample of 600 potential car buyers, 376 indicated that they would consider purchasing a hybrid
gas/electric powered car.
b. What is the point estimate for the proportion of potential car buyers that would consider buying a
hybrid vehicle? Calculate this value.
c. Find the 95% confidence interval for the true population proportion of potential car buyers that
would consider purchasing a hybrid vehicle.
d. Name two ways we could reduce the margin of error (Hint: think about the sample size n and the
confidence level)
Answers: 3
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Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s
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Mathematics, 21.06.2019 16:30
Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?
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Mathematics, 21.06.2019 17:00
The equation of a circle is (x + 4)2 + (y + 6)2 = 16. determine the length of the radius. 10 4 16 8 my flower basket delivers flowers within a 20 mile radius of their store. if this area is represented graphically, with my flower basket located at (5, 2), what is the equation that represents the delivery area? (x - 2)2 + (y - 5)2 = 20 (x - 5)2 + (y - 2)2 = 20 (x + 5)2 + (y + 2)2 = 400 (x - 5)2 + (y - 2)2 = 400
Answers: 1
2. A marketing firm is trying to estimate the proportion of potential car buyers that would consider...
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