BFDA 1)New manufacturing production method2)Is the mean cost of the new production method less than $230 per hour?3)40 hours of the new method will be examined and the standard deviation is $10And the old method has a mean of $220St. Dev. =1.584.744)First the null and alternative hypotheses need to be determined.Then the 40 hours of the new method will need to be examined to determine if the new method has an average mean of less than $220Hypothesis:Test Stat:1) calculate x-bar2) If Ho true (mu=220), the sampling distribution is:Normal ( 220, 10/40^.5,0) Sig. Level:Alpha = .05Reject Ho:Reject Ho: if x-bar < 217Norminv:217x-bar value: Prob. Fctn21502160.012170.042180.112190.212200.25
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Untouchable number, new method, Reject Ho, BFDA New