Answer:
a)
b)
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Let X the random variable that represent interest on this case, and for this case we know the distribution for X is given by:
And let represent the sample mean, the distribution for the sample mean is given by:
(a) What are the mean and standard deviation of the sampling distribution?
On this case
(b) What is the approximate probability that x will be within 0.4 of the population mean μ? (Round your answer to four decimal places.) P =
So for this case we want this probability:
And for this case we can use the z score given by this formula:
And using this concept we got this:
(-5, 2) ⇒ x₁ = -5, y₁ = 2
(7, -1) ⇒ x₂ = 7, y₂ = -1
Slope:
Slope intercept form:
y = mx + b
Plug <em>m</em> and (7, -1) :
-1 = -¹/₄(7) + b
-1 + ⁷/₄ = b
<h3>b = ³/₄ ← y-intercept</h3>
Therefore slope intercept form of h(x):
<h3>h(x) = -¹/₄x + ³/₄</h3>
Answer:
Step-by-step explanation:
Unit rate = 128 ÷ 16 = 8$
Answer:
100 degrees
Step-by-step explanation:
measure of FHD = 65 + 35
measure of FHD = 100
Answer:
Decreased 24 degrees
Step-by-step explanation:
subtract the 17 from Saturday which gets you to 0 but it ends up being -7 on Sunday so i did 17+7 and it gives 24 so that's how much it went down