To do so, the research has 100 high school students complete the maze with classical music playing. The mean time for these students is 41.13 seconds. Assume the standard deviation stays the same, i. e. sigma = 5. Calculate the test statistic. (Round to 2 decimal places)

test statistic, z =  −1.74

Step-by-step explanation:

given data

students n = 100

mean time x  = 41.13 seconds

σ  = 5

we consider µ = 42

solution

we get here The test statistic that is express as

test statistic, z =      ......................1

put here value and we will get

test statistic, z = \frac{41.13-42}{\frac{5 }{\sqrt{100}}}

test statistic, z =  −1.74

2nd one in the first row is correct