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ExtremeBDS [4]
3 years ago
9

CAN SOMEONE HELP ME PLS

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
8 0

Answer:

0.5 < x < 16.5

Step-by-step explanation:

8.5 - 8.0 < x < 8.5 + 8.0 =

0.5 < x < 16.5

<em>Hope that helps! :)</em>

<em></em>

<em>-Aphrodite</em>

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Which expression is the radical form of x^3/4
seraphim [82]
4th root of x cubed
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Several years​ ago, 38​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students r
Colt1911 [192]

Answer:

0.428 - 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.3995

0.428 + 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.4564

We are confident that the true proportion of people satisfied with the quality of education the students receive is between (0.3995, 0.4564), since the lower value for this confidence level is higher than 0.38 we have enough evidence to conclude that the parents' attitudes toward the quality of education have changed.

Step-by-step explanation:

For this case we are interesting in the parameter of the true proportion of people satisfied with the quality of education the students receive

The confidence level is given 95%, the significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical values are:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The estimated proportion of people satisfied with the quality of education the students receive is given by:

\hat p =\frac{499}{1165}= 0.428

The confidence interval for the proportion if interest is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

And replacing the info given we got:

0.428 - 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.3995

0.428 + 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.4564

We are confident that the true proportion of people satisfied with the quality of education the students receive is between (0.3995, 0.4564), since the lower value for this confidence level is higher than 0.38 we have enough evidence to conclude that the parents' attitudes toward the quality of education have changed.

8 0
3 years ago
I need help ASAP! <br><br>Ques: In Attachment!<br>​
leva [86]

ANSWER:

◻ Rational no. —: Addition & Multiplication (Yes) and Subtraction & Division (No)

◻ Integers —: Addition & Multiplication (Yes) and Subtraction & Division (No)

◻ Whole no. —: Addition & Multiplication (Yes) and Subtraction & Division (No)

◻ Natural no. —: Addition & Multiplication (Yes) and Subtraction & Division (No)

3 0
3 years ago
The Miller family drove 357 miles on Monday. They drove a total of 736 miles in 2 days. How many miles did the Miller family dri
Rus_ich [418]

Answer:The Miller family drove 379miles on Tuesday.

Step-by-step explanation:

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4 0
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