<span>46 <= grade < 96
First, let's write the equation for the lower limit that the student must get for a B.
(x + 92 + 82 + 88 + 92)/5 = 80
Multiply both sides by 5 giving
x + 92 + 82 + 88 + 92 = 400
Subtract 92, 82, 88, 92 from both sides
x = 400 - 92 - 82 - 88 - 92 = 46
So the student has to get 46 or higher on the test to make a B.
Now let's compute the upper limit
(x + 92 + 82 + 88 + 92)/5 < 90
Multiply both sides by 5
(x + 92 + 82 + 88 + 92) < 450
Subtract 92, 82, 88, 92 from both sides
x < 450 - 92 - 82 - 88 - 92 ) = 96
So the student has to get a grade of less than 96 to get a B.</span>
Answer:
d. is the probability distribution showing all possible values of the sample mean.
Step-by-step explanation:
The sampling distribution of the sample means is normal for large sample sizes and samples randomly drawn irrespective of the original distribution of the random variable.
In other words, the probability distribution showing all possible values of the sample mean is the sampling distribution of sample mean. Here sample mean is treated as a random variable and its distribution is discussed.
Hence correct option is
d. is the probability distribution showing all possible values of the sample mean.
Answer:
f ' (x) = 4x - 40
Step-by-step explanation:
Switch y and x for inverse
Answer:
Step-by-step explanation:
To solve this problem we are going to set Python as the language.
books = ["a", "b", "c", ... , "z"]
selection = list(3) #here we set a list of dimension 3 as 3 are supposed to be selected
for book in books: #here we parse into the books list
If book in selection: continue #in order to obtain different books, if the book #already in selection list, then we jump
selection.append(random.choice(books)) #if not, we add the book to #selection
print(selection)
Answer:
x = 4
y = -4
(4, -4)
Step-by-step explanation:
-7x - y = -24
y = -3x + 8
-7x - (-3x + 8) = -24
-7x + 3x - 8 = -24
-4x = -16x
x = 4
<em>To</em><em> </em><em>solve</em><em> </em><em>for</em><em> </em><em>y</em><em>.</em>
y = -3(4) + 8
y = -12 + 8
y = -4
