It’s square of pie because the lines don’t match up to you
Answer:
See below.
Step-by-step explanation:
(Given)
(Subtracted 3 on both sides)
(Subtracted ax on both sides)
(Factor out x from x - ax)
(Divided 1 - a on both sides)
Answer: z= -1.636
Step-by-step explanation:
When population standard deviation is known, then the test statistic is given by :-

, where
= sample mean,
= population mean, n=sample size ,
= standard deviation
As per given,

Hence, the e test statistic to see whether the candy bars are smaller than they are supposed to be : z= -1.636