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2 years ago

8

At Midland Elementary, there are 22 students in each of seven fourth- grade classes. How many students are in fourth-grade at Mi

dland?pls help me asap

1 answer:

qwelly [4]2 years ago

7 0

154 students are in fourth grade at Midland

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Step-by-step explanation:

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2 years ago

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3 years ago

A theater group surveyed 146 audience members after a show and found that 132 of them wanted to see the show again. Find the sta

Sophie [7]

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0.024

Step-by-step explanation:

Sample size (n) = 146 people

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$p=\frac{132}{146}\\ p=0.9041$

The standard error for a sample of size 'n' and proportion 'p' is:

$SE = \sqrt{\frac{p*(1-p)}{n}}\\SE = \sqrt{\frac{0.9041*(1-0.9041)}{146}}\\ SE=0.024$

The standard error for the sample proportion of audience members who want to see the show again is 0.024.

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2 years ago

EXPLAIN YOUR ANSWER

Bad White [126]

Solve the equation by substitution method.
To get b-2-3b=4. Then you substitute b into simplest to get, b=-3. Repeat the same process with a to get, a=-5. So your answer would be (-5, -3)

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2 years ago