1 day = 24 hours:
58 days x 24 hours per day = 1,392 hours
1 hour = 60 minutes:
30 minutes / 60 minutes per hour = 0.5 hours.
1392 + 15 + 0.5 = 1,407.5 total hours.
Answer:
2/3
Step-by-step explanation:
Answer:
And we can find this probability with this difference and using the normal standard table or excel:
And the result is illustrated in the figure attached.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability with this difference and using the normal standard table or excel:
And the result is illustrated in the figure attached.
Answer:C would be the correct answer
Step-by-step explanation: