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3 years ago

12

to get a certain shade of green paint, Melissa decides to mix 3 gallons of blue paint with 2 gallons of yellow paint. How much b

lue paint does Melissa need for each gallon of yellow paint

1 answer:

maw [93]3 years ago

3 0

Melissa will need 1.5 gallons of blue paint for each gallon of yellow paint.

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An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

3 years ago

Find the length of the segment indicated. Round to the nearest tenth if necessary.

Aleksandr-060686 [28]

Answer:

x=5

Step-by-step explanation:

x is the length of the line segment from the center to the boderline of circle. So x=5

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3 years ago

Convert the repeating nonterminating 0.1515...

solniwko [45]

303/2000 is the answer to your question

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3 years ago

I know the answer is not 6 so does anyone know the answer?<br> * ANSWER ASAP *

aleksklad [387]

Answer:

8

Step-by-step explanation:

Using sine rule,

sin 80° ÷ 10 = sin 50° ÷ x

x = sin 50° ÷ (sin 80° ÷ 10)

= 7.77 --> 8

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3 years ago

Solve y2 4y – 32 = 0 using the zero product property

maxonik [38]

I hope this helps you

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3 years ago

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