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Tom [10]
3 years ago
11

What expression is equivalent to 24 ⋅ 2–7?

Mathematics
1 answer:
Andrej [43]3 years ago
6 0
24 * 2 = 24 
24 - 7 = 17

We must find an expression that equals 17. 

Answer:  18 * 2 - 19
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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
fiasKO [112]

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).

8 0
2 years ago
Can you so me work for7\10-1\2
Rina8888 [55]
Well, 1/2 is equal to 5/10... so 7/10 - 5/10 is 2/10 because 7-5=2 :)
5 0
3 years ago
Read 2 more answers
???pls help i'm not that smart thank you
Sauron [17]
Answer:
53 in.^2

Hope that helps!:)
4 0
2 years ago
Algebra Expression •x minus x​
Tems11 [23]

The answer is 0.

The expression in algebraic form is :

  • x - x
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We know subtracting a term from its equivalent term will be 0.

4 0
1 year ago
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Answer asap............
diamong [38]

Answer:

6+(-2)

Step-by-step explanation:

6 is positive but we are subtracting 2. Therefore, the expression is 6 plus -2. It is negative because that is what we are taking away. The plus sign does not mean anything because there is a negative number. When you look at it, you immediately read 6 plus -2 and since it is a negative not a positive then it's subtracting not adding.

5 0
2 years ago
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