Answer:
59 to 66
Step-by-step explanation:
Mean test scores = u = 74.2
Standard Deviation = = 9.6
According to the given data, following is the range of grades:
Grade A: 85% to 100%
Grade B: 55% to 85%
Grade C: 19% to 55%
Grade D: 6% to 19%
Grade F: 0% to 6%
So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.
6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for 0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)
The formula for z score is:
For z = -1.56, we get:
For z = -0.88, we get:
Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)
Hey there!
-5x + 4
= -5(-3) + 4
= 15 + 4
= 19
Therefore, your answer is: 19
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Answer: x > 12
<u><em>Step 1.</em></u>
Add 5 to both sides.
2x - 9 + 9 > 15 + 9
2x > 24
<em><u>Step 2.</u></em>
Divide both sides by 2.
2x ÷ 2 > 24 ÷ 2
x > 12
Hence, x > 12 is the answer
Which of the following represents a set of integers greater than zero?. . {1, 2, 3, 4, 5}. . {1, 2, 3, …, 98, 99, 100}. . {all p
fomenos
They are all integers greater than zero but the answer that makes sense the most is all positive numbers.
I hope this helps!