Associate the average of the numbers from 1 to n (where n is a positive integer value) with the variable avg.
1 answer:
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Answer:
And we can find this probability using the z table and we got:
Step-by-step explanation:
Let X the random variable that represent the thickness 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 using the z table and we got:
Check the picture below.
Estimation is taking the general values of an equation to find an answer that is close to the actual answer.
Round the numbers in the equation to their tens places by checking their ones value:
267
7 > 5
267 -> 270
154
4 < 5
154 -> 150
Subtract these two rounded values:
The answer that has this equation is D.
Round the numbers in the equation to their tens places by checking their ones value:
267
7 > 5
267 -> 270
154
4 < 5
154 -> 150
Subtract these two rounded values:
The answer that has this equation is D.