# Random Sample

A random sample of 56 people measured accuracy w/ positive errors representing watches that are ahead of the correct time and negative rep. those behind the time. The 56 values have a mean on -94.7 seconds and a SD of 152.6 sec. Use a 0.01 sig. level to test claim pop of all watches has a mean = to 0.00

Answer is reject the claim that the pop mean = 0.00

https://brainmass.com/statistics/random-sampling/random-sample-accuracy-30810

#### Solution Preview

n= 56

<X> = -94.7 sec

SD = 152.6 sec

mu_o = 0.00

significance level "alpha" = 0.01

Ho: mu ...

#### Solution Summary

A random sample of 56 people measured accuracy w/ positive errors representing watches that are ahead of the correct time and negative rep. those behind the time. The 56 values have a mean on -94.7 seconds and a SD of 152.6 sec. Use a 0.01 sig. level to test claim pop of all watches has a mean = to 0.00

Answer is reject the claim that the pop mean = 0.00