Question

(point) The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 8.1 ounces and standard deviation 0.11 ounces Round your z-score to 2 decimal places. (a) What is the probability that the average weight of a bar in a Simple Random Sample (SRS) with five of nswer to at least 4 decimal places these chocolate bars is between 7.98 and 8.3 ounces? Give your a ANSWER: (b) For a SRS of five of these chocolate bars, what is the level L such that there is a 1% chance that the average weight is less than L? Give your answer to at least 3 decimal places. ANSWER:

Answer 1

Given hat C :8.1, S-oC 0.11 mean P7.984 3) Cad 8-86.E Z &-3-8. P O-115 o11/5 I.44 Z P(Z 4.0- P(z-244) -1.000 O-0043 O-9927 (b koith P-value 0.01 he cos re Ssponding =O-0 -a.33 Z-ScOse Enow thart We 2.33 O.11 49854 11 4.985