Suppose the weights of a population of female Siamese cats are normally distributed with an unknown population mean and a population standard deviation of 0.9 pounds. A random sample of Siamese catsfrom the population produces a sample mean weightof x=10.1 pounds.

What value of z should be used to calculate a confidence interval with a 99% confidence level?

z0.10	z0.05	z0.025	z0.01	z0.005
1.282	1.645	1.960	2.326	2.576