ASQ
CSSBB · Question #228
The average weight of castings produced at the Nebraska foundry is 3.7 lbs. A new supplier from Kansas has submitted a batch of castings known to have normally distributed weights. A random sample…
The correct answer is A. yes. See the full explanation below for the reasoning.
Analyze Phase
Question
The average weight of castings produced at the Nebraska foundry is 3.7 lbs. A new supplier from Kansas has submitted a batch of castings known to have normally distributed weights. A random sample of 10 has an average weight of 3.6 lbs. and standard deviation 0.06 lbs. Do these data indicate that the Kansas foundry produce lighter castings on average?
Options
- Ayes
- Bno
How the community answered
(35 responses)- A74% (26)
- B26% (9)
Topics
#one-sample t-test#hypothesis testing#mean comparison#inference
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