Answer:
And we can find this probability using excel or the normal standard tabe and we got:
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 temperatures 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 excel or the normal standard tabe and we got:
Hey there!☺
Let's break apart 42.
The 4 is in the tens. The 2 is in the ones.
Place Value starting from Thousands
Thousands Hundreds Tens Ones
_________ ________ ____ _____
4 2
So this is how we break up numbers using place value.
Hope this helps!
Answer:
Sadie's error is " she made error in step 2 
where 
"
Because she made error in splitting the powers to simplify the square root
<h3>Therefore the correct answer for Sadie's expression is
where </h3>
Step-by-step explanation:
Given that " Sadie simplified the expression StartRoot 54 a Superscript 7 b cubed EndRoot, where a greater-than-or-equal-to 0, "
It can be written as 
where
The given expression is where
To find Sadie's error and explain the correct answer :
Sadie's steps are
where
<h3>
where
</h3><h3><u>Now corrected steps are</u></h3>
where 
(by using the identity 
(by using the identity 
)
Therefore 
where
<h3>The correct answer is
where </h3>
Sadie's error is " she made error in step 2 " where
Because she made error in splitting the powers to simplify the square root
<h3>Therefore the correct answer for Sadie's expression is
where </h3>
1 mile at 12 m/h is .2 m/min
1 mile at .2 m/min (1/.2) = 5 min So the first mile took 5 minutes
To find how fast the second mile was:
You know it was 1 mile and it took 10 minutes
1/10=.1 m/min which is 6 m/h
The average speed is 6+12/2=9 m/h
Hope that helps. Feel free to ask any questions.
c. No. You have a probability of winning, while your friend has a
probability of winning.
Or it’s A
