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3 years ago

Simone knows that 8 groups of 6 make 48. How can she find 48/6

Mathematics

1 answer:

kap26 [50]3 years ago

8 0

Answer:

repeat add 6

Step-by-step explanation:

6+6+6+6+6+6+6+6=48

idot

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A serving of rice is 1/3 of a cup. How many servings are there in a 2 1/3-cup bag of rice?

iogann1982 [59]

Answer:

Step-by-step explanation:

each cup is 1/3 so divide 2 1/3 by 1/3 to get 7 cups

hope this helps

6 0

3 years ago

What is the coefficient of -10n+10-10

Virty [35]

-10 is the coefficient

5 0

4 years ago

Can someone help me with my online homework please!!!

Igoryamba

Answer:

26cm^2

Step-by-step explanation:

To calculate area of a triangle we multiply height with base and that divided by two

13 × 4 ÷ 2 = 26cm^2

5 0

3 years ago

TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streamin

choli [55]

Answer:

a) The 99% confidence interval would be given (0.523;0.577).

We are 99% confident that this interval contains the true population proportion.

b) $n=\frac{0.55(1-0.55)}{(\frac{0.03}{2.58})^2}=1830.51$

And rounded up we have that n=1831

Step-by-step explanation:

Data given and notation

n=2341 represent the random sample taken

X represent the people that they have watched digitally streamed TV programming on some type of device

$\hat p=0.55$ estimated proportion of people that they have watched digitally streamed TV programming on some type of device

$\alpha=0.01$ represent the significance level

Confidence =0.99 or 99%

z would represent the statistic for the confidence interval

p= population proportion of people that they have watched digitally streamed TV programming on some type of device

The population proportion present the following distribution:

$p \sim N (p, \sqrt{\frac{p(1-p)}{n}}$

Part a) Confidence interval

The confidence interval would be given by this formula

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

For the 99% confidence interval the value of $\alpha=1-0.99=0.01$ and $\alpha/2=0.005$ , with that value we can find the quantile required for the interval in the normal standard distribution.

$z_{\alpha/2}=2.58$

And replacing into the confidence interval formula we got:

$0.55 - 2.58 \sqrt{\frac{0.55(1-0.55)}{2341}}=0.523$

$0.55 + 2.58 \sqrt{\frac{0.55(1-0.55)}{2341}}=0.577$

And the 99% confidence interval would be given (0.523;0.577).

We are 99% confident that this interval contains the true population proportion.

Part b) What sample size would be required for the width of a 99% CI to be at most 0.03 irrespective of the value of p??

The margin of error for the proportion interval is given by this formula:

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

And on this case we have that $ME =\pm 0.03$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

And replacing into equation (b) the values from part a we got:

$n=\frac{0.55(1-0.55)}{(\frac{0.03}{2.58})^2}=1830.51$

And rounded up we have that n=1831

8 0

4 years ago

Four friends purchase a pineapple for $2.89 and 18.4 pounds of peaches. The peaches cost $1.75 per pound. The friends share the

DedPeter [7]

First you calculate the total cost of the pears:
18,4 pounds x $1,75 = $32,2

Them you add the cost of the pineapple:
$32,2 + $2,89 = $35,09

After this you can divide the total cost (35,09) for 4 friends getting the amount due to each one:
35,09/4 = $8,77

5 0

3 years ago

Read 2 more answers