Five times the sum of 3 and twice some numbers is 70. What is the number?
1 answer:
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Answer:
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Step-by-step explanation:
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Answer: $ 990
Step-by-step explanation:
Since, the total number players, n = 12,
The least amount got by one team, a= $ 220
Let there is a successive difference of d,
Thus, the given situation forms an AP,
In which sum of the AP,
But, According to the question,
⇒
Thus, the successive difference, d = $ 70
⇒ The amount of first price,
Answer:
And we can find this probability with the following difference:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.
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 the following difference:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.