All categories

3 years ago

Is 7.9 greater less than or equal to 6.964

Mathematics

2 answers:

Softa [21]3 years ago

4 0

Answer:

It is equal to each other

Step-by-step explanation:

fgiga [73]3 years ago

3 0

7.9 is greater than 6.964 .....(7.9>6.964)

You might be interested in

An automobile manufacturer would like to know what proportion of its customers are not satisfied by the service provided by the

zheka24 [161]

Answer:

The sample size needed if the margin of error of the confidence interval is to be about 0.04 is 18.

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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Past studies suggest this proportion will be about 0.15

This means that $p = 0.15$

Find the sample size needed if the margin of error of the confidence interval is to be about 0.04

This is n when M = 0.04. So

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

$0.04 = 1.96\sqrt{\frac{0.15*0.85}{n}}$

$0.04\sqrt{n} = 1.96\sqrt{0.15*0.85}$

$\sqrt{n} = \frac{1.96\sqrt{0.15*0.85}}{0.04}$

$(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.15*0.85}}{0.04})^{2}$

$n = 17.5$

Rounding up

The sample size needed if the margin of error of the confidence interval is to be about 0.04 is 18.

8 0

3 years ago

Can you please help me just need the answer pls.please need help

stiv31 [10]

5) the vertex is (-1,5) the a.o.s. is x=-1 the y intercept is (0,3)

7 0

4 years ago

The total sales at Office Products this year are 5713.340, which is 35% more than last year's sales. What is the amount of last

klio [65]

Answer:

4232.10

Step-by-step explanation:

Given:

Total sales at Office Products this year are

Which is 35% more than last year's sales.

Question asked:

What is the amount of last years sales ?

Solution:

Let last year's sales = $x$

Total sales of this year = Total sales of last year + sales increased

$5713.340 = x + x \times 35\%\\5713.340 = x + \frac{35x}{100} \\5713.340 = \frac{135x}{100} \\$

Multiplying both side by 100

$571334 = 135x\\$

Dividing both side by 135

$4232.10 = x$

Therefore, the amount of last years sales is 4232.10

3 0

3 years ago

Chelsea's school is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 adult tickets an

seropon [69]

Answer:

$7 for an adult ticket

$6 for a child ticket

Step-by-step explanation:

Add up the total child and adult tickets from both the days.

Adult tickets - 15

Child tickets- 10

Then I divided 165 but 25 and got 6.6.

The child ticket should be less than the adult so I guessed that the adult would be around $7 and the child ticket would be around 6.

I double checked my work by doing...

3*7 giving me 21

and

9*6 giving me 54.

Then I added these up to get $75 which was the total from the first day. This shows that our answer is correct

8 0

3 years ago

Which equation shows an example of the associative property of addition? (–4 i) 4i = –4 (i 4i) (–4 i) 4i = 4i (–4i i) 4i × (–4i

Effectus [21]

The associative property is:

A + B + C = A + (B + C) = (A + B) + C

And a option that uses this is:

-4i + i + 4i- i = (-4i + 4i) + (i - i)

<h3>Which equation shows an example of the associative property of addition?</h3>

The associative property says that we can write:

A + B + C = A + (B + C) = (A + B) + C

So, we can perform the sum in any order we want to.

Then for the given case we would have:

-4i + i + 4i- i = (-4i + 4i) + (i - i)

Where we sum in the order we want to get it equal to zero.

If you want to learn more about sum properties:

brainly.com/question/115658

#SPJ4

7 0

3 years ago