Given:
μ = $3.26 million, averaged salary
σ = $1.2 million, standard deviation
n = 100, sample size.
Let x = random test value
We want to determine P(x>4).
Calculate z-score.
z = (x - μ)/ (σ/√n) = (4 - 3.26)/(1.2/10) = 6.1667
From standard tables,
P(z<6.1667) = 1
The area under the distribution curve = 1.
Therefore
P(z>6.1667) = 1 - P(z<=6.1667) = 1 - 1 = 0
Answer: The probability is 0.
Yes the correct answer is D. Hope this helps :)
Answer: Option C is correct!
Step-by-step explanation:
The range of function is [-1,-5] . so first option is incorrect.
Since graph of the function f(x)=-2sin(x) is shifted down by 3 because of -3
therefore option B is incorrect.
Period of the given function is 2pi because here b =1 and period of sinx function is given by 
therefore option D is also incorrect
Period of the function f(x) is always absolute value number in front of sinx which is given to be 2 here therefore option C is correct.!
Answer:
It is a factor
Step-by-step explanation:
[x³ -7x² + 8x + 16] ÷ (x + 1)
[x³ + x² - 8x² - 8x + 16x + 16] ÷ (x + 1)
[x²(x + 1) - 8x(x + 1) + 16(x + 1)] ÷ (x + 1)
x² - 8x + 16 and tye remainder is 0.
So, yes (x + 1) is a factor
