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3 years ago

Solve for x. Round to the nearest tenth

Mathematics

2 answers:

aksik [14]3 years ago

8 0

Answer:

Answers are in corresponding pictures.

marshall27 [118]3 years ago

6 0

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Answer: 2) 33.3

4) 31.9

6) 11

I hope this helped!

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Please help! see attached

nikdorinn [45]

Answer:

The lowest value of the confidence interval is 0.5262 or 52.62%
The highest value of the confidence interval is 0.5538 or 55.38%

Step-by-step explanation:

Here you estimate the proportion of people in the population that said did not have children under 18 living at home.It can also be given as a percentage.

The general expression to apply here is;

$C.I=p+-z*\sqrt{\frac{p(1-p)}{n} }$

where ;

p=sample proportion

n=sample size

z*=value of z* from the standard normal distribution for 95% confidence level

Given;

n=5000

From the question 54% of people chosen said they did not have children under 18 living at home

$\frac{54}{100} *5000 = 2700\\\\p=\frac{2700}{5000} =0.54$

<u>To calculate the 95% confidence interval, follow the steps below;</u>

Find the value of z* from the z*-value table

The value of z* from the table is 1.96

calculate the sample proportion p

The value of p=0.54 as calculated above

Find p(1-p)

$0.54(1-0.54)=0.2484$

Find p(1-p)/n

Divide the value of p(1-p) with the sample size, n

$\frac{0.2448}{5000} =0.00004968$

Find the square-root of p(1-p)/n

$=\sqrt{0.00004968} =0.007048$

Find the margin of error

Here multiply the square-root of p(1-p)/n by the z*

$=0.007048*1.96=0.0138$

The 95% confidence interval for the lower end value is p-margin of error

$=0.54-0.0138=0.5262$

The 95% confidence interval for the upper end value is p+margin of error

$0.54+0.0138=0.5538$

7 0

3 years ago

Read 2 more answers

What is the time 5 minutes before noon

Rashid [163]

Answer:

11:55

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Consider the line y = x . If the line is dilated by a factor of 1 3 , what is the equation of the resulting line? If the resulti

ella [17]

Answer:

The resulting equation after dilation: y=x.

The resulting equation after translation: y=x-1.

Step-by-step explanation:

The given equation of line

$y=x$

If a line passes through the center of dilation and dilated by factor k, then the equation of line is remains same.

It is given that the line is dilated by a factor of 1/3. The center of dilation is not given so the center of dilation is (0,0).

At x=0,

$y=0$

It means the line passes through the point (0,0). Since the line passes through the center of dilation, therefore the equation of line is remains same.

$y=x$

The translation is defined as

$y=x+b$