Answer:
The probability that at least one 5 will appear in 4 rolls of die equals 
Explanation:
The given question can be solved by Bernoulli's trails which states that
If probablity of success of an event is 'p' then the probability that the event occurs at least once in 'n' successive trails equals

Since in our case the probability of getting 5 on roll of a die equals 1/6 thus we have p = 1/6
Applying the values in the given equation the probability of success in 4 rolls of die is thus given by

Answer:

Explanation:
Given

Required
Determine 
implies 10th percentile and this is calculated as thus

Where n is the number of data; n = 14

Substitute 14 for n


Open the bracket



This means that the 1.5th item is 
And this falls between the 1st and 2nd item and is calculated as thus;

Express 1.5 as 1 + 0.5


From the given data;
and 
becomes




Answer:
Employers are allowed to check the number of keystrokes that word processors enter during the day.
Explanation:
An employer is authorized to monitor the activity of its employee when:
- The employee authorizes it.
- The employer owns the system to be used.
- Surveillance is necessary for a strictly professional purpose.
By analyzing the keys pressed per day, the employer can determine the performance provided by its employees, and if they use the company's resources, for non-work purposes.