Please explain each steps

Q1|

A random sample of tenth-grade boys resulted in the following 16 observed weights:

144,135,96,124,133,108,156,138,99,136,85,121,165,147,155,162.

(a) Test whether the upper quartile (75th percentile) of 10th-grade male weights is greater than 150. Keep the significance level at no more than 0.05. Give your decision rule, test statistic value, p-value, and conclusion.

(b) Find an approximate 90% confidence interval for the population upper quartile 10th-grade male weight.