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yulyashka [42]
3 years ago
14

The manager of a hardware store claims that 90% of the shoppers are satisfied with the the selection of paint he carries. The re

sults of a survey show that 80% percent of shoppers are satisfied with the selection of paint he carries. The margin of error for this survey is 7%. Find the interval estimate to determine if his claim is reasonable.
Question 25 options:


No, his claim is not reasonable because 90% is outside the interval estimate.


Yes, his claim is reasonable because 90% is in the interval estimate.


No, his claim is not reasonable because 90% is in the interval estimate.


Yes, his claim is reasonable because 90% is outside the interval estimate.
Mathematics
1 answer:
MAXImum [283]3 years ago
4 0

Answer:

B: Yes, his claim is reasonable because 90% is in the interval estimate.

Step-by-step explanation:

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Answer:

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General Formulas and Concepts:

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Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

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<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                          f(2x + 4) = 1 - (2x + 4)²
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  3. (Parenthesis) Distribute negative:                                                                   f(2x + 4) = 1 - 4x² - 16x - 16
  4. Combine like terms:                                                                                          f(2x + 4) = -4x² -16x - 15
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