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Elodia [21]
3 years ago
5

A random sample of 12 college graduates revealed that they worked an average of 5.5 years on the job before being promoted. The

sample standard deviation was 1.1 years. Using the 95% level of confidence, what is the confidence interval for the population mean?
Mathematics
1 answer:
Hoochie [10]3 years ago
6 0

Answer:

90%

Step-by-step explanation:

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14x+10y=72 14x+4y=96 Solve the following system of equations using any method
Anarel [89]
    14x + 10y = 72
    14x +   4y = 96
                6y = -24
                 6       6
                  y = -4
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14x + 10(-4) = 72
       14x - 40 = 72
             + 40 + 40
              14x = 112
               14      14
                  x = 8
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3 years ago
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Step-by-step explanation:

7 0
3 years ago
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Dafna11 [192]

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10

Step-by-step explanation:

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