Mathematics, 14.07.2020 02:01 yam44
The standard deviation in the pressure required to open a certain valve is known to be sigma equals 0.6 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has been reduced. (a) Determine the null and alternative hypotheses. (b) Explain what it would mean to make a Type I error. (c) Explain what it would mean to make a Type II error.
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Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.
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The standard deviation in the pressure required to open a certain valve is known to be sigma equals...
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