Blood potassium level, continued. Judy’s measured potassium level varies according to the Normal distribution with with μ=3.8 and σ=0.2mmol/l. Let’s consider what could happen if we took 4 separate measurements from Judy. What is the blood potassium level L such that the probability is only 0.05 that the average of 4 measurements is less than L? (Hint: This requires a backward Normal calculation.)the book says about 3.64 but i got 3.28
Answers
Answer:
The value of l = 3.64
Step-by-step explanation:
Consider the provided information.
μ=3.8 and σ=0.2mmol/l and n=4
As we know
We have given α = 0.05
So by the standard normal table:
Compute
Hence, the value of l = 3.64
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A recipe for orange water says, “Mix 3 teaspoons of yellow water with 1 teaspoon red water.” For this recipe, we might say: “The ratio of teaspoons of yellow water to teaspoons of red water is 3:1.” 1. Write a ratio for 2 batches of this recipe. 2. Write a ratio for 4 batches of this recipe
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Which of the following is the first correct step to write the above equation in the form (x - p)2 = 9, where p and q are integers?
x2 - 14x + 41 + 8 = 0 + 8
x2 - 14x + 41 + 9 = 0 + 9
x2 - 14x + 41 - 8 = 0 - 8
x2 – 14x + 41 - 9 = 0 - 9
Answers
Answer:
The correct answer is the first option
Step-by-step explanation:
Quadratic Equation
The standard form of a quadratic equation is
Sometimes we need to change the expression of the same equation to the form
To accomplish that change, we usually modify the left-hand expression to make it look like the square of a binomial.
The given quadratic equation is
Recall the square of a binomial is
The first term is already present. The second term gives us the value of p:
Solving
Now we need to produce the third term . We only have 41, thus we need to add 8 to both sides of the equation:
The correct answer is the first option
an equation with
2 variables(x).
Answers
Answer:
5x-2=3x+4
x=3
Step-by-step explanation:
Hope I helped!
N=
Answers
Answer:
N=1
Step-by-step explanation:
Answers
answer:
I gotdas the answer
Answers
Answer:
Step-by-step explanation:
g(x) = 4^2x-1 + 7; Find g(1).
f(x) = |8x^2 - 5x + 3|; Find f(-2).
h(x) = -3x + 9; Find h(-1 + x).
f(n) = 5n - 1, Find f(- 3n).
Answers
Step-by-step explanation:
k(a) = | -2a + 3 | - 1
k(3) = | -2(3) + 3 | - 1 replaced the a with 3
= | -6 + 3 | - 1
= | -3 | - 1
= 3 - 1
= 2
g(x) = 4²ˣ⁻¹ + 7
g(1) = 4²⁽¹⁾⁻¹ + 7 replaced the x with 1
= 4¹ + 7
= 4 + 7
= 11
f(x) = | 8x² - 5x + 3 |
f(-2) = | 8(-2)² - 5(-2) + 3 | replaced the x with -2
= | 8(4) - 10 + 3 |
= | 12 - 10 + 3 |
= | 5 |
= 5
h(x) = -3x + 9
h(-1 + x) = -3(-1 + x) + 9 replaced the x with -1 + x
= 3 - 3x + 9
= 12 - 3x
f(n) = 5n - 1
f(-3n) = 5(-3n) - 1 replaced the n with -3n
= -15n - 1