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.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.