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)
Answer:
The 25% discount on AED 4000 will be: 1000 AED
Step-by-step explanation:
Given
In order to determine a 25% discount on the amount AED 4000, all we need means is to multiply 25/100 or (0.25) by 4000.
i.e
Discount amount = 25% of 4000
= 25/100 × 4000
= 0.25 × 4000
= 1000 AED
Thus, the 25% discount on AED 4000 will be: 1000 AED
Answer:
Claire loaded her truck with vegetables from her garden to sell at a local market. Which of the following BEST describes Claire's truck? *
Step-by-step explanation:
Claire loaded her truck with vegetables from her garden to sell at a local market. Which of the following BEST describes Claire's truck? *
Answer: Okay the numbers you put was confusing but I think I got it.
42÷6=x
Step-by-step explanation:if 6 can sit a a table then dividing the number of people by 6 gives the answer.
C because K is 1,-8 so if you go up 1, -7, and right 4,5. So you get k(5,-7)
