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3 years ago

7 feet 8 feet 10 feet 9 feet rosa is painting a wall'

Mathematics

1 answer:

allsm [11]3 years ago

4 0

Answer:

this doesn't make sense, but it depends how big the wall is I guess

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Kelly makes fruit juice each morning. She uses 2 1/3 pints of strawberries and 1 2/5 pints of grapes in her juice. How many more

Monica [59]

2 1/3 -1 2/5 =1 1/10

6 0

3 years ago

You recently sent out a survey to determine if the percentage of adults who use social media has changed from 66%, which was the

il63 [147K]

Answer:

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

Of the 2809 people who responded to survey, 1634 stated that they currently use social media.

This means that $n = 2809, \pi = \frac{1634}{2809} = 0.5817$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5817 - 2.327\sqrt{\frac{0.5817*4183}{2809}} = 0.56$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5817 + 2.327\sqrt{\frac{0.5817*4183}{2809}} = 0.6034$

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).

6 0

3 years ago

The function gx) = x^2is transformed to obtain function hr.

Sav [38]

the graph will shift 3 units to the right

6 0

3 years ago

What is the product?

Marina86 [1]

Answer:

$\frac{2}{k+2}$

Step-by-step explanation:

Simplify the expression and you will get this.

hope this helps

3 0

2 years ago

Pls alert more points

Natasha2012 [34]

Answer:

It is Commutative property of multiplication.

Have a good day!!

6 0

3 years ago