All categories

3 years ago

Will mark brainliest please help

Mathematics

1 answer:

Brut [27]3 years ago

5 0

Answer:

6*10^-9

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

You might be interested in

A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true prop

attashe74 [19]

Answer:

$0.424 - 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.286$

$0.424 + 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.562$

The 99% confidence interval would be given by (0.286;0.562)

Step-by-step explanation:

Information given:

$X= 36$ represent the families owned at least one DVD player

$n= 85$ represent the total number of families

$\hat p=\frac{36}{85}= 0.424$ represent the estimated proportion of families owned at least one DVD player

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by $\alpha=1-0.99=0.01$ and $\alpha/2 =0.05$ . 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:

$0.424 - 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.286$

$0.424 + 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.562$

The 99% confidence interval would be given by (0.286;0.562)

8 0

3 years ago

Choose the correct answer to 1,889/36.<br> 42 R17<br> 51 R53<br> 52 R15<br> 52 R17

ozzi

Answer:

52 R17

Step-by-step explanation:

52 * 36 = 1872

1889 - 1872 = 17

--> 52 R17

3 0

3 years ago

Read 2 more answers

What is 3/8 times 45%

bazaltina [42]

Answer:

0.16875

Step-by-step explanation:

5 0

3 years ago

Samantha is in a book club. She has read 7 books this month. Her book club requires her to read 4 books in one month. How many

kirill [66]

Answer:

Step-by-step explanation:

Hope this helps please mark me brainliest :)

8 0

3 years ago

Pepper jackie purchased 3.5 pounds of jelly beans for 1.19 per pund. How much did she spend on jelly beans, to the nearest cent

Pani-rosa [81]

Answer:

416.5 cent Pepper jackie spend on jelly beans .

Step-by-step explanation:

As given

Pepper jackie purchased 3.5 pounds of jelly beans for $1.19 per pound.

Thus

$1.19 = 1 pound

Cost of 3.5 pounds of jelly beans = 1.19 × 3.5

= $4.165

Therefore the cost of 3.5 pounds of jelly beans is $4.165 .

As 1 dollar = 100 cent

$4.165 = 4.165 × 100

= 416.5 cent

Therefore 416.5 cent Pepper jackie spend on jelly beans .

6 0

3 years ago