To encourage efficiency at a drive through window, a fast food restaurant chain specifies, as a guideline, that at least half of all drive through orders should be taken, prepared, and delivered in 3 minutes or less. Subsequently, a random sample of 64 drive through orders was taken and it was found that 24 of them were taken, prepared and delivered in 3 minutes or less. The remaining orders from the sample took longer than 3 minutes. The fast food company would like to know if they are meeting the specified guideline. Which test should be used?
Single sample test of means with unknown variance (standard deviation) |
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Two sample test of proportions |
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Single sample test of proportions |
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Two sample test of means with unknown variance (standard deviation) |
Ans :
Single sample test of proportions
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