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love history [14]

2 years ago

10

please help please help please please please please please please please please please please please please please please please

please please please please please please please don't wanna fail my test please help will mark the brainiest please help please

1 answer:

marta [7]2 years ago

4 0

Here ya go. I wrote it all down for ya. Hope this help:) have a good day

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2 x ( __ x 7 ) - ( __ x 6 )

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That acc makes no sense

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3 years ago

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PLEASE HELP (20pts, attachment below) Find x and y.

kherson [118]

Step-by-step explanation:

5x +2 = 182 -4x

5x+4x = 182-2

9x = 180

x = 180/9

x = 20

4y +2 = 5x +2

4y = 5x

4y = 5(20)

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3 years ago

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Step-by-step explanation:

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3 years ago

According to a study conducted in one city, 25% of adults in the city have credit card debts of more than $2000. A simple ran

Anvisha [2.4K]

Answer:

The sampling distribution of $\hat p$ is <em>N</em> (0.25, 0.0354²).

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes <em>n</em> > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

$\mu_{\hat p}=p$

The standard deviation of this sampling distribution of sample proportion is:

$\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}$

Let <em>p</em> = proportion of adults in the city having credit card debts of more than $2000.

It is provided that the proportion of adults in the city having credit card debts of more than $2000 is, <em>p</em> = 0.25.

A random sample of size <em>n</em> = 150 is selected from the city.

Since <em>n</em> = 150 > 30 the Central limit theorem can be used to approximate the distribution of <em>p</em> by the Normal distribution.

The mean is:

$\mu_{\hat p}=p=0.25$

The standard deviation is:

$\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.25(1-0.25)}{150}}=0.0354$

Thus, the sampling distribution of $\hat p$ is <em>N</em> (0.25, 0.0354²).

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3 years ago

What is 6.79 minus 3.95 rounded to, to the nearest half dollar

likoan [24]

$6.79 - $3.95 = $2.84. Since you’re rounding to the nearest half dollar, you’d found to $3. $2.84 is closer to $3 than $2.50

$3 - $2.84 = $.16
$2.84 - $2.5 = $.34

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3 years ago