damianr0927 damianr0927

26-09-2022
Mathematics

Answered

NEED HELP PLS. NORMAL DISTRIBUTION
1 The heights of 200 lilies are normally distributed with a mean of 40 cm and
a standard deviation of 3 cm.
a Sketch a normal distribution diagram to illustrate this information.
Indicate clearly the mean and the heights within one, two and three
standard deviations of the mean.
b Find the probability that a lily has a height less than 37 cm.
e Find the probability that a lily has a height between 37 cm and 46 cm.
d Find the expected number of lilies with a height greater than 43 cm.

Answer :

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