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VikaD [51]
3 years ago
7

Teresa is simplifying an Step 1: (4x² Step 2: Step 3: 2x

Mathematics
1 answer:
Lesechka [4]3 years ago
7 0
The answer is B






None of the rest equal up to the same thing
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What type of function is shown in the data in the table below?
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The functions shows in the data table is an exponential function.
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A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon
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Answer:

The 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon they'd received in the mail.

This means that n = 603, \pi = \frac{142}{603} = 0.2355

95% confidence level

So \alpha = 0.05, z is the value of Z that has a p-value of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2355 - 1.96\sqrt{\frac{0.2355*0.7645}{603}} = 0.2016

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2355 + 1.96\sqrt{\frac{0.2355*0.7645}{603}} = 0.2694

The 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694).

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2 years ago
Please help it’s for a test whoever answers correct I’ll give you a Brainly
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they both charge the same cost per linear feet

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All equivalent fractions of 4/5​
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8/10 or 16/20

Step-by-step explanation:

hope it helps

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Two-fifths of the students in 6th grade are in the band, Of these, one-
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1/10 or 10%

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1/4 x 2/5 = 1/10 (10%)

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