3 years ago

At a school event there were 96 girls .the ratio of number of girls to the number of boys was 4:5

1 answer:

8 0

144, 4:6 simplifies to 2:3, if you divide 96 by 2 you get 48, and 48 x 3 = 144

You might be interested in

Crazy boy [7]

Answer:

The answer is 2

Step-by-step explanation:

3 0

3 years ago

mojhsa [17]

Answer:

no I can't

Step-by-step explanation:

im a dum dum, sorry.

8 0

2 years ago

irina1246 [14]

Answer:

Step-by-step explanation:

8 0

2 years ago

Viefleur [7K]

22/48 = 11/24

Answer : 11/24

3 0

2 years ago

Ivan

Answer: $\pm0.1706$

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of $\alpha:0.05$ : $z_{\alpha/2}= 1.96$

Sample mean : $\overline{x}=2.5$

Standard deviation : $\sigma= 0.5$

We assume that this is a normal distribution.

Margin of error : $E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $E=\pm (1.96)\dfrac{0.5}{\sqrt{33}}=\pm0.170596102837\approx\pm0.1706$

Hence, the margin of error is $\pm0.1706$

7 0

3 years ago