Answer:
Step-by-step explanation:
60 minutes = 1 hour
The statement would be
"Customers arrive at a checkout counter in a department store according to a Poisson distribution at an average of seven per 60 minutes
If it takes approximately ten minutes to serve each customer, then the mean service time for in minutes for customers arriving during a 1-hour period is
10/60 × 7 = 1.67
In Poisson distribution, variance = mean
Therefore,
Variance = 1.67
The probability that the total service time will exceed 2.5 hours is expressed as P(x > 2.5)
Converting 2.5 hours to minutes, it becomes 2.5 × 60 = 150 minutes
From the Poisson distribution calculator,
P(x > 150) = 0
Answer:
x=-20
Step-by-step explanation:
x=-10•2
• means multipled
Answer:
Simplified:
−
8
x
^3
+
6
x
^2
−
8
x
+
9
It is the same thing in standard form.
Step-by-step explanation:
I hope this helps! Have a nice day!
<h3>
Answer: 768</h3>
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Explanation:
To go from gallons to fluid ounces (abbreviation fl oz), we multiply by 128
For example, 2 gallons becomes 2*128 = 256 fl oz as shown in the table.
Another example: 3 gallons = 3*128 = 384 fl oz.
Therefore, 6 gallons would be 6*128 = <u>768</u> fl oz.
To go in reverse, from fl oz to gallons, we divide by 128.