3 years ago

I'll give brainliest! Help :'(

Mathematics

2 answers:

kramer3 years ago

7 0

2. (x, y) = (2, 0)

3. (x, y) = (1, -1)

Westkost [7]3 years ago

3 0

2.) (x,y) = (2,0)
3.) (x,y) = (1,-1)

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Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1004 adults, 86% said that they have a cell phone.

meriva

Answer: The value of test statistic = -10.67

Step-by-step explanation:

Test statistic for proportion:

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

, where p= population proportion

n= sample size

$\hat{p}$ = sample proportion

AS per given,

p=0.94, n= 1004, $\hat{p}=0.86$

$z=\dfrac{0.86-0.94}{\sqrt{\dfrac{0.94(1-0.94)}{1004}}}\\\\=\dfrac{-0.08}{\sqrt{\dfrac{0.0564}{1004}}}\\\\=\dfrac{-0.08}{\sqrt{0.0000561752988048}}\\\\=\dfrac{-0.08}{0.00749501826581}\\\\=-10.673756509\approx-10.67$

i.e. the value of test statistic = -10.67

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3 years ago

Where is YoungTrappa101?

MatroZZZ [7]

Step-by-step explanation:

he is right..............

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4 years ago

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Dennis_Churaev [7]

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