Mathematics: A recent study showed that the modern working person experiences an average of 2.1 hours per day of distractions (phone calls, emails, impromptu visits, etc.). A random sample of 50 workers for a large corporation found that these workers were distracted an average of 1.8 hours per day and the population standard deviation was 20 minutes. Estimate the true mean population distraction time with 90% confidence, and compare your answer to that of the study.

If you are an architect and you are drawing a building to scale for people to build ...

A recent study showed that the modern working person

stef76

26.01.2022

In this exercise we have to use the knowledge of probability to calculate this we will use percentage as:

C.I= 108

Given the following information in the text we find that:

Study Average=126 minutesFor sample mean =108 minutesS.D=20 and n=50

Then calculating the probability we find that:

$Standard error=S.D/\sqrt(n)\\
S.E=20/\sqrt(50)\\
S.E=2.828\\
Z=1.65\\
C.I=108+4.662
$

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