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4 years ago

Please! I need an answer to this fast! Will give 39 points!!!!

Mathematics

2 answers:

EastWind [94]4 years ago

7 0

Answer:

Step-by-step explanation: You haven't provided enough information for anyone to answer, try including the answer choices or pictures if possible.

andrew-mc [135]4 years ago

4 0

If it is this question:

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Graphing Absolute Value Functions & Inequalities<br> f (x) = |3x-4|

Triss [41]

Answer:

absolute value makes everything positive instead of negative so since you didn't even really ask a question I'm just going to solve the problem without a point

f(x)=3x+4

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3 years ago

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\The graph for the equation y = negative x + 2 is shown below. On a coordinate plane, a line with positive slope goes through (0

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3 years ago

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Can someone please help

RoseWind [281]

it’s 9 sq feet
use A=b•h/2
the base length is 6
the height is 3
6•3= 18 then divided by 2 is 9

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3 years ago

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Anna has fabric that is 1/4 yard long. She needs to cut the fabric into pieces that are 1/8 yard long. How many 1/8 yard long pi

Damm [24]

Answer:

Step-by-step explanation:

1/4= .25

1/8= .125

so 1/4÷ 1/8=2

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4 years ago

Suppose the germination periods, in days, for grass seed are normally distributed. If the population standard deviation is 3 day

KatRina [158]

Answer:

The minimum sample size is needed to be 90% confident that the sample mean is within 1 day of the true population mean is 25.

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 the margin of error 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.

If the population standard deviation is 3 days, what minimum sample size is needed to be 90% confident that the sample mean is within 1 day of the true population mean?

This is n when $\sigma = 3, M = 1$ . So