Jenna runs 5 miles everyday. She averages 4.5 miles per hour. How many ft/sec does she travel? Round to the nearest tenth.
1 answer:
Answer:
She travel 6.6 ft/sec
Step-by-step explanation:
Jenna runs 5 miles everyday.
She averages 4.5 miles per hour
Now we are supposed to find How many ft/sec does she travel
1 mile =5280 feet
1 hour = 3600 seconds
Now convert the given speed in feet per second using conversion
So, speed in feet/sec=
So, speed in feet/sec=6.6 ft/sec
So, She travel 6.6 ft/sec
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Answer:
a) Cancellations are independent and similar to arrivals.
b) 22.31% probability that no cancellations will occur on a particular Wednesday
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given time interval.
Mean rate of 1.5 per day on a typical Wednesday.
This means that
(a) Justify the use of the Poisson model.
Each wednesday is independent of each other, and each wednesday has the same mean number of cancellations.
So the answer is:
Cancellations are independent and similar to arrivals.
(b) What is the probability that no cancellations will occur on a particular Wednesday
This is P(X = 0).
22.31% probability that no cancellations will occur on a particular Wednesday