Answer:
Step-by-step explanation:
Hello!
The definition of the Central Limi Theorem states that:
Be a population with probability function f(X;μ,δ²) from which a random sample of size n is selected. Then the distribution of the sample mean tends to the normal distribution with mean μ and variance δ²/n when the sample size tends to infinity.
As a rule, a sample of size greater than or equal to 30 is considered sufficient to apply the theorem and use the approximation.
X[bar]≈N(μ;σ²/n)
If the variable of interest is X: the number of accidents per week at a hazardous intersection.
There is no information about the distribution of this variable, but a sample of n= 52 weeks was taken, and since the sample is large enough you can approximate the distribution of the sample mean to normal. With population mean μ= 2.2 and standard deviation σ/√n= 1.1/√52= 0.15
I hope it helps!
Answer:
Step-by-step explanation:
Step 1:
Convert the mixed numbers to the improper fractions:
Step 2:
We multiply the numbers remembering about simplifying:
Answer:
<em>-4/5,-1/2,-0.2,0.25</em>
Step-by-step explanation:
To order these, it would be best to convert them into decimals.
-4/5 is equal to -0.8
-1/2 is equal to -0.5
-0.8 is the least, because the further left on a number line, the less the number is.
-0.5 is next and then -0.2
Finally, 0.2 is the greatest
<em>-4/5,-1/2,-0.2,0.25</em>
<u>Hope this helps :-)</u>
-2 because:
(8-6)/(2-3)=2/-1=-2 as the answer
Answer:
18.
Step-by-step explanation:
3 x 6 = 18. He eats 3 slices every 5 minutes so 5 minutes x 6 is half an hour. so 18 is your answer.
