3 years ago

Pls help I’ll brainlest for the correct answers and add extra points

Mathematics

1 answer:

Allisa [31]3 years ago

5 0

Answer:
8,5,7,1,3,2,4,6

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A limnologist wishes to estimate the mean phosphate content per unit volume of lake water. It is knownfrom studies in previous y

telo118 [61]

Answer: 68

Step-by-step explanation:

As per given , we have

Population standard deviation : $\sigma=4$

Critical value for 90% confidence interval = $z_{\alpha/2}=1.645$

Margin of error : E= 0.8 milligrams

The formula to find the sample size is given by :-

$n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2$

i.e. $n=(\dfrac{(1.645)(4)}{0.8})^2=(8.225)^2$

$=67.650625\approx68$

Hence, the limnologist must analyze 68 samples.

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4 years ago

Describe two ways you can find the measure of <7.

Verizon [17]

Answer:

angle 7= 66

Step-by-step explanation:

Angle 1 is equal to the 114 degrees. And angle 1 + angle 7 = 180. So it would be 114 + angle 7 = 180. So you do 180-114 = 66. So angle 7= 66.

The other way is that 114 + angle 6 = 180, so you do 180-114= 66.

And agle 6 is equal to angle 7, so that's another way you can know that angle 7= 66

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3 years ago

What is the range of the function graphed below?

vovangra [49]

The answer is A. -∞ < y < 2

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4 years ago

Find the Mean Absolute Deviation: 5, 11, 2, 7, 16.\<br> A.8.2<br> B.1.24<br> C.2.84<br> D.4.24

AlladinOne [14]

Answer:

8.2

Step-by-step explanation:

5±11±2±7±16=41

41÷5=8.2

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3 years ago

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HELP ME AGAIN PLEASE I BEG

BartSMP [9]

Answer:

Both of your answers are correct

Step-by-step explanation:

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3 years ago

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