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alekssr [168]
3 years ago
12

The probability of an operator entering alphanumeric data incorrectly into a field in a database is equally likely. The random v

ariable X is the number of fields on a data entry form with an error. The data entry form has 28 fields. Is X a discrete uniform random variable? Why or why not? (Please provide the mathematical details that lead to your answer.)
Mathematics
1 answer:
34kurt3 years ago
5 0

Answer:

Since P(0) and P(1) have not the same values for the probability, X is not a discrete uniform random variable.

Step-by-step explanation:

Probability of data to be correct: 0.5

Probability of data being incorrect: 0.5

The random variable X is the number of fields that have an error within the range of 28.

P(0) = 0.5^2^8

P(1) = ^2^8\text{C}_1 \times 0.5 \times 0.5^2^7 = 28 \times 0.5 ^2^8

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How do i find the geometric between 8 and 18
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<span>-----
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Kate is a wage earner. One year she earned $72 000. She works 36 hours/week.
Lemur [1.5K]

Answer:

Kate's possible hourly rate of pay:  $34.75

Hours of overtime: 100

Step-by-step explanation:

In order to find Kate's hourly wage, we can set up an equation based on the number of hours she works per week and the estimated number of overtime hours to equal her total pay for the year.  If Kate works 36 hours/week and there are 52 weeks in a year, her total hours for one year are:  36 x 52 = 1872.  Setting up an equation based on her total earnings of $72,000:

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Combine like terms:  1872x + 200x = 72000 or 2072x = 72000

Divide both sides by 2072:  2072x/2072 = 72000/2072

Solve for x:  x = $34.75

Kate's hourly rate is estimated at $34.75.  We can check to see if this is correct by putting this value back into our original equation:

1872(34.75) + 100(2)(34.75) = 65052 + 6950 = 72002

The answer of $72,002 is very close to $72,000 and the best estimate of Kate's hourly wage and overtime hours.

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Answer:

Step-by-step explanation:

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Answer:

64/35

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