Answer:
The probability that between 64 and 90 of them read the ingredients listed on a product's label is 0.82.
Step-by-step explanation:
We know the proportion of the population, that is π=0.28.
The standard deviation for this sampling distribution is
The value 64 represents a proportion of p=64/256=0.25, and the value 90 represents p=90/256=0.35.
With these values, we can calculate the z-values.
The probability that between 64 and 90 read the ingredients is:
The probability that between 64 and 90 of them read the ingredients listed on a product's label is 0.82.
We know that
in the triangle ABC
∡A+∡B+∡C=180°
∡C=180-(50+100)-------> ∡C=30°
triangle ABC and triangle XYZ are similar
so
∡X=∡A
∡Y=∡B
∡Z=∡C
hence
∡Z=30°
the answer is∡Z=30°
12x^4 - 42x^3 - 90x^2 =
6x^2(2x^2 - 7x - 15) =
6x^2(2x+3)(x - 5) <==
Coefficient of sample = sample SD/mean * 100
So first to find Standard deviation(S)
S= sqrt(sum of (point - mean)^2)/(n-1)
S=6.7528
^use online calc
Next mean = sum of numbers divided by number of numbers
Mean = 31.6
^online calc again
So coefficient = (6.7528/31.6) * 100
Answer:
Step-by-step explanation:
Given
From the first statement:
From the second:
Required
Find M and S
We have:
and
Substitute in
Divide both sides by 2
Substitute in
Hence;