Answer: ± 1.96
Step-by-step explanation:
Given the following :
Mean (m) time spent = 11.85
Standard deviation = 4 minutes
Since the population of site visits is Normally distributed, Hence, the test statistic will follow a normal distribution :
The test the hypothesis that mean time has changed at 0.05 confidence interval
Normal distributions have a mean value of 0 and standard deviation of 1
Using a two tailed test At 0.05 confidence interval ;
Using the critical value calculator, which in general under normal distributions :
0.05% confidence interval for a two tailed test is
± 1.96
100. Percent means out of hundred, so one percent means one out of a hundred, two percent means two out of a hundred, etc.
1. 12/32
2. Divide by 4 on both denominator and numerator
3. Final answer is 3/8
Hope that helps :)
a−b+c−d−g+2.718282 is the solution for this equation.
(1) 
, and
Subtract this from 
to get a remainder of
What we've done here is show that
We can keep going as long as the degree of the remainder's numerator is at least the same as the degree of its denominator.
Next, 
, and
Subtract this from the previous remainder to get a new remainder of
which means
Finally, 
, and
Subtract this from the previous remainder to get
So we end up with
(the quotient is the expression in the box)
(2) Using the same process as before:
