The susceptibility of the root stocks of a variety of orange

Last updated: 10/12/2023

The susceptibility of the root stocks of a variety of orange tree to a specific larva is investigated by a group of researchers Forty orange trees are exposed to the larva and then examined by the researchers 6 months after exposure The number of larvae per gram is recorded on each root stock The mean and standard deviation of the logarithm of the counts are recorded to be 9 02 and 1 12 respectively We want to construct a 90 confidence interval on the mean of the logarithm of the larvae counts A 90 confidence interval is 8 73 The lower limit is given and find the upper limit Use 2 decimal places