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ZanzabumX [31]
2 years ago
10

The final exam grade distribution for all students in the introductory statistics class at a local community college is displaye

d in the table, with A = 4, B = 3, C = 2, D = 1, and F = 0. Let X represent the grade for a randomly selected student from the class.
What is the standard deviation of the distribution?


A) 1.16

B) 1.08

C) 1.41

D) 2.98

Mathematics
2 answers:
Eddi Din [679]2 years ago
4 0
The answer is B I know this
PolarNik [594]2 years ago
3 0

Answer:

B

Step-by-step explanation:

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Answer: if you are going for the top it is 5 for 5e bottome it is 3 for all it is 3.5

Step-by-step explanation:

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The population of a town gradually decreases by about 30
topjm [15]
It would be 3,600 - 30 = 3570
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The function f(x) = x2 – 6x + 9 is shifted 5 units to the left to create g(x). what is g(x)?
allsm [11]
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3 years ago
93.8% complete This is a Single Choice Question; skip ahead to question content A B C D E Confirm You planted 488 acres of corn
irakobra [83]

Answer:

  148

Step-by-step explanation:

The total yield was ...

  64,100 +8,120 = 72,220 bushels

The average yield was ...

  (72,200 bu)/(488 ac) = 148 bu/ac

Your yield per acre is 148 bushels.

____

<em>Comment on corn yield</em>

Average corn yield in the US in 2018 was 176.4 bushels per acre. The highest was 270 bu/ac in a southeastern Washington county.

6 0
2 years ago
Can u guys PLEASE answer this question ASAP. A fat cat that was initially 12 kg reduces its weight by 10% each month. How long d
Mkey [24]

Answer:

It takes at least 7 months for the cat to be at least 6 kg lighter than the original weight.

Step-by-step explanation:

Use exponential decay formula:

A = P (1-r)t

A = amount decreased to

P = original amount

r = rate of decrease

t = time

 

6 ≥ 12 (1-0.10)t      divide both sides by 12

0.5 ≥ (0.9)t            take log of both sides

log (0.5) ≥ log (0.9)t     power rule of logs lets the exponent t drop to front of log to become a factor

log (0.5) ≥ t log(0.9)     divide both sides by log(0.9) which is negative so reverse the inequality sign

log (0.5) / log (0.9) ≤ t     use calculator

6.57 ≤ t

 

It takes at least 7 months for the cat to be at least 6 kg lighter that original weight.

 

check:

12 (0.9)7≈ 5.73

12 (0.9)6 ≈ 6.37

5 0
2 years ago
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