A fast food resultant estimates that the mean sodium content in one of its breakfast sandwiches is 920 milligrams. A random sample of 40 breakfast sandwiches has a mean sodium content of 925...

A fast food resultant estimates that the mean sodium content in one of its breakfast sandwiches is 920 milligrams. A random sample of 40 breakfast sandwiches has a mean sodium content of 925 milligrams. Assume the population standard deviation is 18 milligrams. At a=0.05, do you have enough evidence to reject the claim?

Directions:           (a) identify the claim and state null hypothesis and alternate hypothesis,

                                (b) find the critical value and identify the rejection regions,

                                (c) find the standardized test statisticz,

                                (d) decide whether to reject or fail ro reject the null hypothesis, and

                                (e) interpret the decision in the context of the original claim.