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VARVARA [1.3K]
2 years ago
9

FINAL EXAM PLEASSE HELP

Mathematics
1 answer:
krok68 [10]2 years ago
3 0

f(3) = -4 as 3 lies between 2 and 5

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Suppose the scores of students on a Statistics course are Normally distributed with a mean of 563 and a standard deviation of 37
ololo11 [35]

Answer:

47.72% of students scored between 563 and 637 on the exam .

Step-by-step explanation:

The percentage of the students scored between 563 and 637 on the exam

= The percentage of the students scored lower than 637 on the exam -

the percentage of the students scored lower than 563 on the exam.

Since 563 is the mean score of students on the Statistics course, 50% of students scored lower than 563. that is P(x<563)=0.5

P(x<637)=P(z<z*) where z* is the z-statistic of the score 637.

z score can be calculated using the formula

z*=\frac{X-M}{s} where

  • X =637
  • M is the mean score (563)
  • s is the standard deviation of the score distribution (37)

Then z*=\frac{637-563}{37} =2

P(z<2)=0.9772, which means that 97.72% of students scored lower than 637 on the exam.

As a Result, 97.72%-50%=47.72% of students scored between 563 and 637 on the exam

5 0
3 years ago
3 posters cost 24.50, so how many can you buy with 171.50
Ilia_Sergeevich [38]

Answer:

21

Step-by-step explanation:

24.50 / 3 = 49/6

5 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIST
netineya [11]
56 because of the formula and the misadventure amount it
8 0
2 years ago
Parallelogram ABCD is rotated to create image A'B'C'D'. On a coordinate plane, 2 parallelograms are shown. The first parallelogr
Gala2k [10]

Answer:

(x,y)→(y,-x)

Step-by-step explanation:

Parallelogram ABCD:

A(2,5)

B(5,4)

C(5,2)

D(2,3)

Parallelogram A'B'C'D':

A'(5,-4)

B'(4,-5)

C'(2,-5)

D'(3,-2)

Rule:

A(2,5)→A'(5,-2)

B(5,4)→B'(4,-5)

C(5,2)→C'(2,-5)

D(2,3)→D'(3,-2)

so the rule is

(x,y)→(y,-x)

4 0
2 years ago
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The lines graphed below are perpendicular. The slope of the red line is -2.
ASHA 777 [7]

Answer:

1/2

Step-by-step explanation:

opposite reciprocal

4 0
3 years ago
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