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bazaltina [42]
3 years ago
5

Samantha reports that 60% of the first year students at her university think they should be able to bring a car to campus. She a

lso notes that she is 95% certain that between 50 and 70% of the first year students agree. Which of the following statements is FALSE?A) the range from 50-70% is a confidence intervalB) 95% refers to her confidence levelC) 60% is a statisticD) the standard error for her sample is 15
Mathematics
1 answer:
Nostrana [21]3 years ago
4 0

Answer:

D) the standard error for her sample is 15

Step-by-step explanation:

Samantha is 95% certain that between 50% and 70% of the first year students agree that they should be able to bring a car to campus.

Here

  • 95% is the confidence level.
  • The range between 50% and 70% indicates 95% confidence interval.
  • 60% is the average proportion of the first year students at her university think they should be able to bring a car to campus.
  • 10% (0.1) is the margin of error from the mean

Since standard error can be obtained by dividing margin of error by the z-statistic of the confidence level which is 1.96. The standard error for her sample \frac{0.1}{1.96} does not equal to 15.

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stira [4]

Answer:

<h3>Length = 12 ft</h3>

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Step-by-step explanation:

Given,

Area of rectangle = 42 \:  {ft}^{2}

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Now,

x(2x + 5) = 42

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Either

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Or,

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So, width = \frac{7}{2} ft

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12

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7 0
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How do you do this!???
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Answer:

x=2

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2 years ago
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