MATH - probability #2

A rescue squad spokesperson claims that the squad receives an average of 3 calls per hour. If at most 6 calls were received over a 5-hour period, would you suspect that the spokesperson was overestimating the
average number of calls received per hour? Explain based on the probability
of this occurring.


If the expected number is 3/hr then in 5hrs there should be 5*3=15calls. It would not be real unusual to have 6 calls, the answer really depends on what the variance is, not just the average. If the variance is large this could be a perfectly acceptable number.

asked by Lindz

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    The number of calls received by a car towing service averages 14.4 per day (per 24 hour period). After finding the mean number of calls per hour, find the probability that in a randomly selected hour the number of calls is 0
  2. statistics

    A sales firm receives an average of four calls per hour on its toll-free number. For any given hour, find the probability that it will receive exactly eight calls
  3. elementary statistics

    The number of calls received by a car towing service averages 21.6 per day (per 24-hour period). Find the probability that in a randomly selected hour the number of calls is fewer than 4. What requirement for the Poisson
  4. Math statistics

    A mountain search and rescue team received an average of 600 calls per year. Use the poisson dustribution to find the probability that on a randomly selected day, they will receive 1 or more calls.
  5. Math

    Each year (365 days) the fire department receives 270 emergency calls on average. In a give 7-day week, what is the probability of receiving A. no calls b. more than one call c. one call or less d. at least two calls please help
  6. Statistics

    A local fire station receives an average of 0.5 rescue calls per day. Find the probability that on a randomly selected day, the fire station will receive fewer than two calls.
  7. Statistics

    A local fire station receives an average of 0.5 rescue calls per day. Find the probability that on a randomly selected day, the fire station will receive fewer than two calls. (Round your answer to the nearest thousandth.)
  8. statistics

    The company policy for customer service representatives gives time off for positive reviews. If, in the first 20 calls a customer service agent handles in a day, 13 or more elect to take a subsequent survey and rate the service as
  9. Statistics

    An important part of the customer service responsibilities of a natural gas utility company concerns the speed with which calls relating to no heat in a house can be serviced. Suppose that one service variable of importance refers
  10. Math

    Joe's electric made 16 customer calls last week and 22 calls this week. How many calls must be made next week in order to maintain an average of at least 21 calls for the three week period? My answer was at least 19 calls must be

More Similar Questions