The number of calls received by a towing service follows a Poisson distribution, with an average of 26.4 calls per day (24 hour period). Find the probability that in any randomly selected hour the number of calls is exactly 2. (hint: start by finding the average calls per hour). Note: enter your answer in decimal form and round to 3 decimal places.
Read DetailsAssuming two possible gender outcomes among newborn baby whales (male/female), and also assuming a 50-50 probability of male or female, answer the following questions. How many possible male/female outcomes are possible among 2 randomly selected baby whales? [outcomes] What is the probability of finding only 1 female among the 2 randomly selected baby whales? (round to 2 decimal places and report as a number, not a percent) [probf] Hint: Use the Fundamental Counting Rule to find the total possible outcomes, and the Combination rule to find how many ways to get exactly a certain number of outcomes from among the larger group. Finally, divide the latter from the former to find the probability.
Read DetailsFor the following data, compute the z-score for the value shown, and note whether or not it is “unusual.” Round all z-scores to 2 decimal places. Answer “yes” if unusual, or “no” if not unusual (no quote marks). Answers must be exact and precise. Remember that z-scores represent how many standard deviations a value is from the mean, and any value more than 2 standard deviations either below or above from the mean is considered “unusual”. value mean std dev 110 130 12 z-score [zscore] (round to 2 decimals) Unusual? [unusual] (yes or no)
Read DetailsCorrectly identify each of the following study methods as being either observational or experimental. 1. Trying different employee training methods to see which is most effective 2. Asking employees for feedback regarding the training they receive
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