All categories

4 years ago

2. A fair dice is rolled. What is the probability that a number divisible by 3 is rolled?

Mathematics

1 answer:

Anni [7]4 years ago

6 0

Answer: 2

Step-by-step explanation:

A dice has 6 numbers on it, 1,2,3,4,5, and 6.

how many pairs of 3 can you make?

(1 2 3) (4 5 6)

There are 2 pairs, so your answer is 2

You might be interested in

A cruise ship travelled 250 nautical miles in 4 hours at a constant speed. . How far did the cruise ship travel in one hour?

mojhsa [17]

Answer:

62.5 miles

ithink

Step-by-step explanation:

8 0

3 years ago

The NWBC found that 42.1% of women-owned businesses provided retirement plans contributions.

Natasha_Volkova [10]

Answer:

Sample size of 586 or higher.

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 $Z = 1.96$ .

What sample size could be 95% confident that the estimated (sample) proportion is within 4 percentage points of the true population proportion?

Sample size of at least n when $M = 0.04$

42.1% of women-owned businesses provided retirement plans contributions, which means that $p = 0.421$ . So

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

$0.04 = 1.96\sqrt{\frac{0.421*0.579}{n}}$

$0.04\sqrt{n} = 0.9677$

$\sqrt{n} = \frac{0.9677}{0.04}$

$\sqrt{n} = 24.19$

$\sqrt{n}^{2} = (24.19)^(2)$

$n = 585.2$

We need a sample size of 586 or higher.

3 0

3 years ago

The parents’ club has $2,500 to invest in printed shirts to sell at their fundraiser. What is the maximum number of shirts that

VikaD [51]

Total amount to be invested = $2,500.

First given price for a printed shirt = $18.

Number of shirts that they can buy = Total money ÷ Price of each shirt.

a) For unit price $18 number of shirts can buy = 2,500/18 = 138.89, so approximately 138 ( because it's less than 139).

Therefore, with unit price $18 the maximum number of shirts can buy = 138 shirts.

a) For unit price $15 number of shirts can buy = 2,500/15 = 166.67, so approximately 166 ( because it's less than 167).

Therefore, with unit price $15 the maximum number of shirts can buy = 167 shirts.

a) For unit price $11 number of shirts can buy = 2,500/11 = 227.27, so approximately 227 ( because it's less than 228).

Therefore, with unit price $11 the maximum number of shirts can buy =227 shirts.

Therefore, with least unit price $11 , maximum number of shirts could be buy and that is 227 shirts which is over 200.

4 0

3 years ago

In circle a, arc mCFE is 240 degrees<br><br> what is the measure of angle CAE

sweet-ann [11.9K]

120 because its a circle and 360-240 =120

6 0

4 years ago

Read 2 more answers

Please help me with this ASAP ASAP please please help

kykrilka [37]

Answer:

4ㅈr² is formula

4 × ㅈ× (16)²

= 1024ㅈ cm²

6 0

3 years ago