3 years ago

DELE

Mathematics

1 answer:

OverLord2011 [107]3 years ago

4 0

Answer:

The third one

Step-by-step explanation:

N/A

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What is the function for this graph?

matrenka [14]

Answer:

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3 years ago

In a survey of 1008 adults, a polling agency asked, "When you retire, do you think you will have enough money to live comfort

Olin [163]

Answer:

[0.4979, 0.5479]

Step-by-step explanation:

-We first determine the sample proportion:

$\hat p=\frac{x}{n}\\\\=\frac{528}{1008}\\\\=0.5238$

-The confidence intervals of a sample proportion is calculated using the formula:

$CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}$

#We substitute for the sample proportion and z value to get the Confidence interval:

$CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}\\\\=0.5238\pm 1.645\times \sqrt{\frac{0.5238\times0.4762}{1008}}\\\\=0.5238\pm0.0259\\\\=[0.4979,0.5497]$

Hence, the 90% confidence intervals is [0.4979,0.5479]

7 0

3 years ago

I need help with this question ive been struggling

Alexeev081 [22]

Answer:

hmmmmmmmmm 3rd?

hope it helps

Step-by-step explanation:

7 0

3 years ago

What is the solution to this equation ?<br><br><br> x + 9 = -4

PolarNik [594]

Isolate the x. Note the equal sign. What you do to one side, you do to the other.

Subtract 9 from both sides

x + 9 (-9) = -4 (-9)

x = -4 - 9

x = -13

-13 is your solution

hope this helps

8 0

4 years ago

2.50=?%...............................

k0ka [10]

2.50 would be 25% out of 100%

4 0

3 years ago