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3 years ago

3) Asanji's school is selling tickets to the annual dance competition. On the first day of ticket sales the

Mathematics

1 answer:

frutty [35]3 years ago

5 0

Answer:

C) senior citizen ticket 10$, child ticket 11$

Step-by-step explanation:

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2 years ago

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3 years ago

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There are 10 men and 14 women in.Kthleen's math class.what is the ratio of women to the total number of students in the class?

ahrayia [7]

The ratio can be determined as,

$\begin{gathered} \text{Ratio}=\frac{14}{10+14} \\ =\frac{14}{24} \\ =\frac{7}{12} \end{gathered}$

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9 months ago

Solve this system of equations:<br> y = 3x<br> 2y + x = 14

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Step-by-step explanation:

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3 years ago

A student wants to survey the sophomore class of 200 students about whether the school should require uniforms. A

Fittoniya [83]

Answer: C

Step-by-step explanation:

<u>Given:</u>

Sample size (n) = 50

x = 12

$\widehat{\mathbf{p}}=\frac{\mathbf{x}}{n}=\frac{12}{50}=0.24$

Confidence level = 90%

α = 1 − 0.90 = 0.10

α/2 = 0.05

$\text { Critical value }\left(z_{c}\right)=z_{\frac{\alpha}{2}}=z_{0.05}=1.6449$

(from standard normal table)

90% Confidence interval is,

$\begin{aligned}&\text { Confidence interval }=\widehat{\mathbf{p}} \pm z_{c} \times \sqrt{\frac{\hat{\mathbf{p}}(1-\hat{\mathbf{p}})}{n}} \\&\text { C. I }=0.24 \pm 1.6449 \times \sqrt{\frac{0.24(1-0.24)}{50}} \\&\text { C. I }=0.24 \pm 1.65 \times \sqrt{\frac{0.24(1-0.24)}{50}}\left\end{aligned}$

Therefore, 90% confidence interval for the true proportion of sophomores who favour the adoption of uniforms is C

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2 years ago