$$ \begin{array}{l} ext { b) } n=600, p=0.28 \ ext { Mean: } \mu=\square \ ext { Variance: } \sigma^{2}=\square \ ext { Standard deviation: } \sigma=\square\end{array} $$

Question

$$ \begin{array}{l} 	ext { b) } n=600, p=0.28 \ 	ext { Mean: } \mu=\square \ 	ext { Variance: } \sigma^{2}=\square \ 	ext { Standard deviation: } \sigma=\square\end{array} $$

UpStudy AI · Accepted Answer

**Mean**

$$
\mu = np = 600 \times 0.28 = 168
$$

**Variance**

$$
\sigma^2 = np(1-p) = 600 \times 0.28 \times (1-0.28) = 600 \times 0.28 \times 0.72 = 120.96
$$

**Standard Deviation**

$$
\sigma = \sqrt{np(1-p)} = \sqrt{120.96} \approx 11
$$
Mean: 168 Variance: 120.96 Standard Deviation: 11

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