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What is the number of vibrations that occur in a given time interval?
That's the (frequency of the vibrations) multiplied by the (number of seconds in the time interval)
What is the number of vibrations that occur in a 1-second time interval is called?
It is called the frequency. The SI unit is the Hertz. One Hertz is one cycle per second.
How do you find the greatest number of Mondays that may occur in any 45 day interval?
Get a calendar. Start on a Monday and mark off 45 days. Count the number of Mondays you have crossed off. The answer will be 7.
How do you find the greatest number of mondays that may occur in any 45-day interval?
Start with Monday as the first day, and count. This will give the maximum number of Mondays possible. The answer turns out to be 7, with a couple of days of wiggle-room. I just now realized that I mis-read the question. You are not asking for the maximum number, but in fact the smallest: the greatest number that can appear in any 45 day period. So the answer is actually 6, not 7. There can be no fewer than 6 Mondays in any interval of 45 days.
What is the difference between the normal distribution and Poisson distribution?
The normal distribution is a continuous probability distribution that describes the distribution of real-valued random variables that are distributed around some mean value.The Poisson distribution is a discrete probability distribution that describes the distribution of the number of events that occur within repeated fixed time intervals, where the mean frequency is a known value, and each interval is independent of the prior interval(s)/event(s).
