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butalik [34]
3 years ago
11

A consumer report counted 72 low-quality, 112 medium-quality, and 711 high-quality computers based on a random sample. The repor

t went on to say that all computers, regardless of quality, are packaged identically and sold at the same price.
Use the observed frequencies to create a probability model for the quality of the next computer purchased.
Input your answers as fractions or as decimals rounded to the nearest hundredth.
Mathematics
1 answer:
blsea [12.9K]3 years ago
8 0

Answer:

high quality = 711/895

medium quality = 112/895

low quality = 72/895

Step-by-step explanation:

72 + 112 + 711 = 895

high quality = 711/895

medium quality = 112/895

low quality = 72/895

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SOLVE
cluponka [151]

Answer:

x=3

y=11

Step-by-step explanation:

5x + 2y = 37

y = x + 8

5x+2(x+8)=37

5x+2x+16=37

7x=21

x=3

y = (3) + 8

y=11

6 0
2 years ago
a shoe store sold 53 pairs of shoes on monday amd 35 pairs on tuesday . on a wednesday , the store sold as many pairs of shoes a
8_murik_8 [283]

Do 53 +35,thats for wednsday then do 88(53+35)divided by 2 whitch is 44.

3 0
3 years ago
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp
yKpoI14uk [10]

Answer:

Confidence Interval in 95% confidence level for the quality rating is (6.06,7.46)

Step-by-step explanation:

Confidence Interval can be calculated using the formula M±ME where

  • M is the mean of the sample
  • ME is the margin of error in a given confidence level

Using the sample obtained from 50 business travelers we get

  • Mean of the sample is 6.76
  • standard deviation of the sample is 2.526

Margin of error (ME) around the mean using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in 95% confidence level (1.96)
  • s is the standard deviation of the sample (2.526)
  • N is the sample size (50)

Using the numbers in the formula we get:

ME=\frac{1.96*2.526}{\sqrt{50} } ≈ 0.70

Then the confidence interval becomes 6.76±0.70

6 0
3 years ago
PLEASE HELPPPP!!!!!!
Sloan [31]

Step-by-step explanation:

y=kx

say that y is the original prince and x is the sale price

15=k(10)

15/10=k

3/2=k

you can check with the next problem to check if it is the same

25=k(20)

25/20=k

5/4=k

so you take 5/4-3/2=-1/4 so the constant is -1/4

Hope that helps :)

8 0
3 years ago
Pls help <br> Simplify <br> 6m+ 7n+ 5m - 3n
Sliva [168]
<span>6m+ 7n+ 5m - 3n
(6m + 5m) + (7n - 3n)
11m + 4n  </span>←  answer
6 0
3 years ago
Read 2 more answers
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