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Alex
3 years ago
11

Leveled Practice in 1-4, find the unit rate.

Mathematics
1 answer:
pashok25 [27]3 years ago
5 0

Answer:

13mph

Step-by-step explanation:

you must multiply both fractions by the reciprocal of 1/65 which is 65/1

(1/5 * 65/1) / (1/65 * 65/1)

(65/5) / (65/65)

13/ 1

13/1 = 13

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The sample proportion has an approximately normal distribution, with the mean being the population mean and the standard deviation (i.e. the standard error of the sampling proportion) equal to 

SE = sqrt(p*q/n) where p is the population proportion q is 1-p, and n is the sample size. 

<span>(Typically, for a confkdence interval, the sample proportion and its complement are substituted for p and q.) </span>

The margin of error will be Zc*SE, where Zc is the critical value of Z for the level of confidence required. The confidence interval, then, will be the sample proportion, plus or minus the margin of error. 

For a 90% confidence interval, Zc is 1.645. 

<span>So the margin of error is 1.645 * sqrt(.9*.1/400), roughly .025. So your confidence interval would be around [.875, .925] 


The best and most correct answer among the choices provided by your question is the second choice or letter C which is 3%.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.</span>
4 0
2 years ago
Read 2 more answers
At Dairy Land, 50% of the 32 ice cream flavors contain fruit. How many ice cream flavors contain fruit?
lesya692 [45]

Answer:

hmmm i think you need to dod

Step-by-step explanation:

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8 0
2 years ago
50 POINTS AND BRAINIEST PLEASE HELP
exis [7]

Answer:

<h2><u>y = -2x</u></h2>

Step-by-step explanation:

If you notice very carefully then you will see that the line passes through the points :

( 1 , - 2 )

( - 1 , 2 )

Hence the value of x = 1 when the value of y = - 2 .

We know that - 2 × 1 = - 2

⇒ - 2 x = y

⇒ y = - 2x

Hence the first OPTION is correct .

Verification :

For points ( - 1 , 2 ) we can write :

y = - 2x

⇒ 2 = - 2 × - 1

⇒ 2 = 2

Hence the answer is verified .

Always try to use the converse of the graphical method .

( Nothing converse is there ... just saying the opposite steps of that method :P )

I mean in graphical method we plot points and then join , here identify the joined points and then make the equation .

5 0
3 years ago
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maks197457 [2]

Answer: 94x-1

Step-by-step explanation:

6 0
1 year ago
Talyn is riding her bike down the street at
EleoNora [17]

Step-by-step explanation:

1 kilometer

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4 0
2 years ago
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