A man was surprised when he found an old bank account statement in his mother’s attic. Money had been left for 30 years in a ban
2 answers:
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Answer:
16 miles
Step-by-step explanation:
Assume the working day in a week is 5.
Given:
Michael drives 160 miles at the end of the work week. therefore as per assumption,
5 days of travelling distance = 160 miles
To find the distance of Micheal's house from work.
Solution:-
5 days of travelling distance = 160 miles --------------------(given)
Now,
Per day driving for work =
Per day driving for work =
Per day driving for work =
So, Micheal drives to work each day is 32 miles.
Therefore, the one side driving of Micheal is equal to distance of Micheal's house from work.
One side driving of Micheal =
One side driving of Micheal =
One side driving of Micheal = 16 miles
Therefore, the distance of Micheal's house from work is 16 miles.
Answer:
And the explanation of this number is:"The number of text messages for Kendra it's 2.26 deviations above the mean"
Step-by-step explanation:
1) 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".
2) Calculate the z score
Let X the random variable that represent the number of text messages per month, and for this case we know the distribution for X is given by:
Where and
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 the explanation of this number is:"The number of text messages for Kendra it's 2.26 deviations above the mean"