Answer:
The approximate number of employees who completed web analytics training are 245 .
Step-by-step explanation:
Formula
As given
A survey of 600 randomly selected employees in Company X found that 150 of them completed web analytics training.
Part value = 150
Total value = 600
Putting in the above formula
Percentage = 25%
Thus this shows that 150 employees who completed web analytics training from 600 employees are 25% .
As given
If there were 980 employees in the company .
Total value = 980
Percentage = 25%
Putting all the values in the formula
Part value = 245
Therefore the approximate number of employees who completed web analytics training are 245 .
Sin(pi/4) = 1/sqrt(2)
csc(pi/4) = sqrt(2)
csc^2(pi/4) = 2
-csc^2(pi/4) = -2
For it to double in value it would take 13 years and 4 months
Answer:
A 99% confidence interval will be wider than a 95% confidence interval
Step-by-step explanation:
From the question we are told that
The 95% confidence interval for for the mean foot length for students at the college is found to be 21.709 to 25.091 cm
Generally the width of a confidence interval is dependent on the margin of error.
Generally the margin of error is mathematically represented as
From the above equation we see that
Here 
is the critical value of the half of the level of significance and this value increase as the confidence level increase
Now if a 99% confidence level is used , it then means that the value of
will increase, this in turn will increase the margin of error and in turn this will increase the width of the confidence interval
Hence a 99% confidence interval will be wider than a 95% confidence interval
