PLS ANSWER BRAINLIEST IF RIGHT

Find the circumference of the circle and round to the nearest tenth

VLD [36.1K]

Answer:

The circumference is 45.2yd

Step-by-step explanation:

Given

$d = 14.4$ --- diameter

Required

Determine the circumference

The circumference is calculated as:

$C =\pi d$

So, we have:

$C =\pi * 14.4$

Take pi a 3.14

$C =3.14 * 14.4$

$C =45.216$

Approximate

$C =45.2yd$

4 0

3 years ago

A simple random sample of size n=250 individuals who are currently employed is

Likurg_2 [28]

Answer:

$0.104 - 2.58\sqrt{\frac{0.104(1-0.104)}{250}}=0.054$

$0.104 + 2.58\sqrt{\frac{0.104(1-0.104)}{250}}=0.154$

The 99% confidence interval would be given by (0.054;0.154) . So we are confident at 99% that the true proportion of people that they did work at home at least once per week is between 0.054 and 0.154

Step-by-step explanation:

For this case we can estimate the population proportion of people that they did work at home at least once per week with this formula:

$\hat p = \frac{X}{n}= \frac{26}{250}= 0.104$

We need to find the critical value using the normal standard distribution the z distribution. Since our condifence interval is at 99%, our significance level would be given by $\alpha=1-0.99=0.01$ and $\alpha/2 =0.005$ . And the critical value would be given by:

$z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58$

The confidence interval for the mean is given by the following formula:

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

If we replace the values obtained we got:

$0.104 - 2.58\sqrt{\frac{0.104(1-0.104)}{250}}=0.054$

$0.104 + 2.58\sqrt{\frac{0.104(1-0.104)}{250}}=0.154$

The 99% confidence interval would be given by (0.054;0.154) . So we are confident at 99% that the true proportion of people that they did work at home at least once per week is between 0.054 and 0.154

3 0

3 years ago

Solve for x.<br> 2<br> 8<br> 4<br> X

Gemiola [76]

Answer:

Impossible

Step-by-step explanation:

This diagram is not correctly stating the question

6 0

3 years ago

The following histogram shows the relative frequencies of the heights, recorded to the nearest inch, of a population of women. T

Airida [17]

Answer:

The following histogram shows the relative frequencies of the height recorded to the nearest inch of population of women the mean of the population is 64.97 inches and the standard deviation is 2.66 inches

(a) Based on the histogram, what is the probability that the selected woman will have a height of at least 67 inches? Show your work

Answer:

0.22268

Step-by-step explanation:

z-score is z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

(a) Based on the histogram, what is the probability that the selected woman will have a height of at least 67 inches? Show your work

At least means equal to or greater than 67 inches

z = 67 - 64.97/2.66

z = 0.76316

P-value from Z-Table:

P(x<67) = 0.77732

P(x>67) = 1 - P(x<67) = 0.22268

The probability that the selected woman will have a height of at least 67 inches is 0.22268

Step-by-step explanation:

6 0

3 years ago

Mia saved $95.25 in 3 months. She saved $49.00 in the first month and $7.43 in the second month. How much money did Mia save in

vichka [17]

38.82 if you add them all together they give you 95.25

7 0

3 years ago

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