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lys-0071 [83]
3 years ago
7

A random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. The distribution of

speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph. Refer to Exhibit A. If we are interested in determining an interval estimate for μ at 86.9% confidence, the z value to use is _____.
a. 1.96
b. 1.31
c. 1.51
d. 2.00
Business
1 answer:
rjkz [21]3 years ago
4 0

Answer:

so correct option is c. 1.51

Explanation:

given data

random sample n = 81

average speed x = 60 mph

standard deviation σ = 13.5 mph

interval estimate  μ =  86.9%

to find out

the value of the z

solution

we have given  μ =  86.9%

so we get here z critical value for the confidence level =  86.9 %

we will use here standard normal table

so z value for 86.9% is 1.51

so correct option is c. 1.51

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Answer:

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Explanation:

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6 0
3 years ago
Orion would like to go on a trip to Ireland in two years. He wants to have $3,000 for the trip, so he is planning to invest mone
denis-greek [22]

Answer:

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Explanation:

To determine how much money Orion has to invest today in order to have $3,000 in two years, considering he will get an 8% compound interest rate, we can use this formula:

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P = $3,000 / 1.1664

P = $2,572.02

4 0
3 years ago
1. A useful characteristic of money is that money
Virty [35]

Answer:

O A. allows us to compare the values of goods and services.

Explanation:

Money has three primary functions which include a medium of exchange, unit of account,  and store of value.

As a unit of account, money is used to give value to other assets. In other words, money provides a medium through which assets and products are valued.  Money is divisible into smaller units which makes its application in valuation easy.

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5 0
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Suppose that Billy McGee owns the Internet domain www.ironmaiden.com. Iron Maiden, the legendary British heavy metal band, was g
Eduardwww [97]

Answer:

B

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5 0
3 years ago
Choose the term that best matches the description given.
OleMash [197]

Answer:

supply

Explanation:

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