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3 years ago

What is the square route of 5?

Mathematics

1 answer:

denis-greek [22]3 years ago

6 0

Square root are the same 2 numbers multiplied.

Ex: 8*8=64 (Square root is 8)

9*9=81 (Square root is 9)

2.2360679775*2.2360679775=5

Answer=2.2360679775

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Two sisters, sister A and sister B, play SCRABBLE with each other every evening. Sister A is a statistician, and she draws a ran

snow_tiger [21]

Answer:

First question: LCL = 522, UCL = 1000.5

Second question: A sample size no smaller than 418 is needed.

Step-by-step explanation:

First question:

Lower bound:

0.36 of 1450. So

0.36*1450 = 522

Upper bound:

0.69 of 1450. So

0.69*1450 = 1000.5

LCL = 522, UCL = 1000.5

Second question:

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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

The project manager believes that p will turn out to be approximately 0.11.

This means that $\pi = 0.11$

95% confidence level

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

The project manager wants to estimate the proportion to within 0.03

This means that the sample size needed is given by n, and n is found when M = 0.03. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.96\sqrt{\frac{0.11*0.89}{n}}$

$0.03\sqrt{n} = 1.96\sqrt{0.11*0.89}$

$\sqrt{n} = \frac{1.96\sqrt{0.11*0.89}}{0.03}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.11*0.89}}{0.03})^2$

$n = 417.9$

Rounding up

A sample size no smaller than 418 is needed.

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3 years ago

Which of the following sets of angles of a triangle represents an acute triangle?

Mademuasel [1]

Abser is b hope this helps

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write the number that can be shown with this many hundreds, tens, and ones, 1 hundreds, 2 tens, 18 ones

NARA [144]

It is 138 who won the know that

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3 years ago

One number exceeds another by 5 the sum of the numbers is 37 . What are the numbers

Eduardwww [97]

One number = x
Another number = y

x = y + 5
x + y = 37

(y + 5) + y = 37
2y + 5 = 37
2y = 32
y = 16

x = (16) + 5
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The numbers are 16 and 21.

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Lorico [155]

Answer:

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Step-by-step explanation:

Complementary angles always add up to 90 degrees

90 - 56 = 34 degrees (1)

180 - 49 = 131 degrees (2)

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