Suppose your marketing colleague used a known population mean and standard deviation to compute the standard error as 56.8 for samples of a particular size. you don't know the particular sample size but your colleague told you that the sample size is greater than 60. your boss asks what the standard error would be if you triple the sample size. what is the standard error for the new sample size?

32.793

Step-by-step explanation:

Given that  your marketing colleague used a known population mean and standard deviation to compute the standard error as 56.8 for samples of a particular size

You don't know the particular sample size but your colleague told you that the sample size is greater than 60.

When n becomes 3n, we get Std error would become instead of

to

Thus we get standard error for new sample size = old se/sqrt 3

=

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s