3 years ago

Someone plz help me

Mathematics

1 answer:

Paul [167]3 years ago

8 0

Answer:

keegan is correct

the answer is B

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At a canning facility, a technician is testing a machine that is supposed to deliver 250 milliliters of product. The technician

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Answer:

The value of the test statistic is $t = 1.97$

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 250$

The alternate hypotesis is:

$H_{1} \neq 250$

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the null hypothesis value, $\sigma$ is the standard deviation and n is the size of the sample.

In this problem:

$X = 251.6, \mu = 250, \sigma = 5.4, n = 44$

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{251.6 - 250}{\frac{5.4}{\sqrt{44}}}$

$t = 1.97$

The value of the test statistic is $t = 1.97$

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3 years ago

Find f^-1(x) and it’s domain.

Mrac [35]

Answer: A

Step-by-step explanation:

Letting $f(y)=x$ ,

$x=\sqrt{y}-5\\\\x+5=\sqrt{y}\\\\y=(x+5)^{2}$

Also, the domain of an inverse is the same as the range of the original function, so the range is $x \geq 0$

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1 year ago

castel invests $7178 in a savings account with monthly compounding. after 7 years, the balance reaches $12,543.00. What is the i

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Step-by-step explanation:

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3 years ago

Can somebody please help me? I will mark brainiest if i can!<br> qr + r; use q = 3, and r = -6

Sveta_85 [38]

The answer is -12. R times -6 is -18 and -18 plus -6 is -12

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2 years ago

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