The length of a fully grown hibiscus plant is normally distributed and has a mean 35cm. It is found that 5% of these plants are longer than 45cm. i. Find the standard deviation σ. ii. When plants are chosen for sale, those shorter than 30cm are rejected. Find the probability that a plant will be rejected.
The length of a fully grown hibiscus plant is
i. Find the standard deviation σ.
ii. When plants are chosen for sale, those shorter than 30cm are rejected. Find the probability that a plant will be rejected.
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The length of a fully grown hibiscus plant is normally distributed and has a mean of 35cm and a standard deviation of 4cm.
i. When plants are chosen for sale, those shorter than 30cm are rejected. Find the probability that a plant will be rejected.
ii. 20% of hibiscus plants is taller than x cm. Find the value of x.