3 years ago

Multiplying (-9)(-6)(2)=

Mathematics

1 answer:

yawa3891 [41]3 years ago

3 0

Answer:

108

Step-by-step explanation:

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Is the square root of 222 rational number

nignag [31]

Answer:

The square root of 222 is an irational number.

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3 years ago

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3,053/2,8 Alguien me ayuda porfavor? Pero con el proceso porfa

PtichkaEL [24]

Answer:

1.09

Step-by-step explanation:

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2 years ago

Solve for x using cross multiplication. x = 3x 4 2x + 7 5 x = [?]

Lena [83]

Answer:

1.8 + 0.75

Step-by-step explanation:

1.80

+0.75

= 2.55

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2 years ago

I need help doing this.

Elanso [62]

a[n] = 7n - 16

The fifth term is a[5]

a[5] = 7(5) - 16 = 35 - 16 = 19

Answer: C. 19

3 0

3 years ago

A simple random sample of size nequals15 is drawn from a population that is normally distributed. The sample mean is found to be

Bond [772]

Answer with explanation:

To test the Significance of the population which is Normally Distributed we will use the following Formula Called Z test

$z=\frac{\Bar X - \mu}{\frac{\sigma}{n}}$

$\Bar X =31.1\\\\ \sigma=6.3\\\\ \mu=25\\\\n=15\\\\z=\frac{31.1-25}{\frac{6.3}{\sqrt{15}}}\\\\z=\frac{6.1\times\sqrt{15}}{6.3}\\\\z=\frac{6.1 \times 3.88}{6.3}\\\\z=3.756$

→p(Probability) Value when ,z=3.756 is equal to= 0.99992=0.9999

⇒Significance Level (α)=0.01

We will do Hypothesis testing to check whether population mean is different from 25 at the alpha equals 0.01 level of significance.

→0.9999 > 0.01

→p value > α

With a z value of 3.75, it is only 3.75% chance that ,mean will be different from 25.

So,we conclude that results are not significant.So,at 0.01 level of significance population mean will not be different from 25.

3 0

3 years ago