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9966 [12]
3 years ago
15

What is (0,6] n (6,8]?

Mathematics
1 answer:
Anastaziya [24]3 years ago
3 0

Answer:

(6) the letter n : intersection which means the number you will find at the first bracket and has the same number at the other bracket

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An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step 2 of 2 : Suppose a sample of
rewona [7]

Answer:

The 80% confidence interval for the population proportion of oil tankers that have spills each month is (0.199, 0.257).

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 zscore that has a pvalue of 1 - \frac{\alpha}{2}.

Suppose a sample of 333 tankers is drawn. Of these ships, 257 did not have spills.

333 - 257 = 76 have spills.

This means that n = 333, \pi = \frac{76}{333} = 0.228

80% confidence level

So \alpha = 0.2, z is the value of Z that has a pvalue of 1 - \frac{0.2}{2} = 0.9, so Z = 1.28.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.228 - 1.28\sqrt{\frac{0.228*0.772}{333}} = 0.199

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.228 + 1.28\sqrt{\frac{0.228*0.772}{333}} = 0.257

The 80% confidence interval for the population proportion of oil tankers that have spills each month is (0.199, 0.257).

6 0
3 years ago
-2,1,4,7,10,.....(14th term) A 36 B 32 C 37 D 31
lesya [120]

It seems you just keep adding 3

-2; 1; 4; 7; 10; 13; 16; 19; 22; 25; 28; 31; 34; 37

37 is the fourteenth term.


5 0
3 years ago
Write in expanded form 3.124
Mamont248 [21]
3.124
3 + 0.100+ 0.020 + 0.004
4 0
4 years ago
Read 2 more answers
What is true about this graph? Select all that apply.
schepotkina [342]

Answer:

E, B and A

Step-by-step explanation:

8 0
3 years ago
Check for understanding:
solniwko [45]

Answer:

<em>Daniel does have enough money to make this car payment</em>

Step-by-step explanation:

<u>Addition and Subtraction</u>

Daniel has an initial balance of $460.63 on this checking account.

He must pay $85.23 for groceries.

The new balance is $460.63 - $85.23 = $375.40

He then pays $81.34 for his cell phone bill. The balance is now $375.40 - $81.34 = $294.06.

He receives a shopping refund of $52.13 that adds up to this balance that now is: $294.06 + $52.13 = $346.19.

Daniel has to make his $264 car payment. The balance is $346.19, thus:

Daniel does have enough money to make this car payment

6 0
3 years ago
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