historically the time needed for college student to complete a certain paper and

Question

historically the time needed for college student to complete a certain paper and pencil maze forllow a normal distribution, with population mean of seventy seconds and a population standeard deviation of fifteen second. a student researcher is interesed to see if the mean time will chance from meditation, a group of nine college students meditate for thirty minutes and then complete the maze for the first time. what type of test it this??

two sample t test, one sample t test, matched pairs t test , one sample z test for a mean

Explanation / Answer

Option-D) One sample Z test for mean

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