240/6 = 40
So now we now that the ratio was multiplied by 40.
5(40) = 200
There are 200 teddy bears in the store.
Answer:
Pr(X-Y ≤ 44.2) = 0.5593
Step-by-step explanation:
for a certain breed of terrier
Mean(μ) = 72cm
Standard deviation (σ) = 10cm
n = 64
For a certain breed of poodle
Mean(μ) = 28cm
Standard deviation (σ) = 5cm
n = 100
Let X be the random variable for the height of a certain breed of terrier
Let Y be the random variable for the height of a certain breed of poodle
μx - μy = 72 -28
= 44
σx - σy = √(σx^2/nx + σy^2/ny)
= √10^2/64 + 5^2/100
= √100/64 + 25/100
= √ 1.8125
= 1.346
Using normal distribution,
Z= (X-Y- μx-y) / σx-y
Z= (44.2 - 44) / 1.346
Z= 0.2/1.346
Z= 0.1486
From the Z table, Z = 0.149 = 0.0593
Φ(z) = 0 0593
The probability that the difference of the observed sample mean is at most 44.3 is Pr(Z ≤ 44.2)
Recall that if Z is positive,
Pr(Z≤a) = 0.5 + Φ(z)
Pr(Z ≤ 44.2) = 0.5 + 0.0593
= 0.5593
Therefore,
Pr(X-Y ≤ 44.2) = 0.5593
<span>-5
+ [2 - (4 * (-3) + 6)] / 2
First off, we must remember PEMDAS or </span>
"Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction"
So we start with parentheses first.
But for the problem (4 * (-3) + 6) , there is two answers depending on which way you solve it! So what do you do? Remember in math, it is always left to right.
so- (4 * (-3) + 6) = (-12 + 6) = -6.
Now the equation looks like this: -5 + [2 - (-6)] / 2
2 - (-6) = 8
Now the equation looks like this: -5 + (8) / 2
Going left to right we can finally solve.
-5 + 8 = 3
3/2 = 1.5
Answer is 1.5!
Answer:
"If Kendrick is excited, then music class is next."
Step-by-step explanation:
The conditional would be "not." If it is not, he is not. "If music class is next, then Kendrick is exited" could be correct if the grammar was too. You do not know if music class is next so they couldn't be excited. However, if he is excited, then music class has to be next.