Mathematics: I need some help with this

CI=[0.8592,0.9402]Yes, Method appears to be effective.Step-by-step explanation:-We first calculate the proportion of girls born:Since np, we assume normal distribution and calculate the 99% confidence interval as below:Hence, the confidence interval is {0.8598, 0.9402]-The probability of giving birth to a girl is 0.5 which is less than the lower boundary of the confidence interval, it can be concluded that the method appears to be effective....

I need some help with this - id13074360, lillysiege

Ответ:

tylermorehead1

06.05.2021

Mathematics

1200 square inches

Step-by-step explanation:

First find area of rectangle which is length x width

20 x 30 = 600

then to find area of the two right triangles multiply the legs then divide by 2

20 x 30 = 600

600/2 = 300

since there is 2 multiply 300 by 2

600

then add everything together

600+600 = 1200

0,0(0 оценок)

Ответ:

granniejo

04.12.2021

Mathematics

CI=[0.8592,0.9402]

Yes, Method appears to be effective.

Step-by-step explanation:

-We first calculate the proportion of girls born:

$\hat p\frac{x}{n}\\\\=\frac{333}{370}\\\\=0.9$

Since np $\geq 10$ , we assume normal distribution and calculate the 99% confidence interval as below:

$CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p)}{n}}\\\\=0.9\pm2.576\sqrt{\frac{0.9\times 0.1}{370}}\\\\=0.9\pm 0.0402\\\\={0.8598, \ 0.9402]$

Hence, the confidence interval is {0.8598, 0.9402]

-The probability of giving birth to a girl is 0.5 which is less than the lower boundary of the confidence interval, it can be concluded that the method appears to be effective.

0,0(0 оценок)

I need some help with this

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question