If the population mean is $420, what is the probability the null hypothesis will be rejected (using the rejection region you calculated above)? give your answer in the following format: 0.0450 (if it is 0.045) or 0.2345 (if it is for example 0. i. e. use 4 decimals for your answer.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]

fd

step-by-step explanation:

i think u have 12 apples sorry again i don't really know if it correct i'm just tryna hrlp people out.