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3 years ago

Which number is less -49 or -41??

1 answer:

3 0

The number -49 is less because it's farther away from the zero. -41 is closer to zero than -49. Try it out on a number line!

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How many 3/4s are in 1

kirza4 [7]

Answer and Step-by-step explanation:

There is $1\frac{1}{3}$ $\frac{3}{4}$ in the number 1.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

5 0

2 years ago

What type of triangle is this

olga_2 [115]

Answer:

an acute triangle

Explanation:

All of the angles are less than 90 degrees, which is an acute triangle.

3 0

2 years ago

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Suppose that scores on the mathematics part of a test for eighth-grade students follow a Normal distribution with standard devia

riadik2000 [5.3K]

Answer:

We need an SRS of scores of at least 153.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large an SRS of scores must you choose?

This is at least n, in which n is found when $M = 20, \sigma = 150$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$20 = 1.645*\frac{150}{\sqrt{n}}$

$20\sqrt{n} = 1.645*150$

$\sqrt{n} = \frac{1.645*150}{20}$

$\sqrt{n} = 12.3375$

$(\sqrt{n})^{2} = (12.3375)^{2}$

$n = 152.2$

Rounding to the next whole number, 153

We need an SRS of scores of at least 153.

8 0

3 years ago

a box of cereal weighs 600 grams . how much is this weight in pounds ? explain or show your reasoning .

lyudmila [28]

Answer:

600 Grams = 1.323 Pounds

Step-by-step explanation:

1 gram equals 0.0022 pounds

600 x 0.0022 = about 1.323

6 0

3 years ago

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Use a calculator to find the standard deviation of this data set:

Rashid [163]

Answer:

3.5

Hope this helps!

4 0

3 years ago

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