The following data represent the scores of 50 students on a statistics exam. The mean score is 80.02, and the standard deviation is 11.9.
39 51 59 63 66 68 68 69 70 71
71 71 73 74 76 76 76 77 78 79
79 79 79 80 80 82 83 83 83 85
85 86 86 88 88 88 88 89 89 89
90 90 91 91 92 95 96 97 97 98
Use the z-score method to identify potential outliers among the scores.
Answer the question True or False.
What will be an ideal response?
Question 2
The university police department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with a mean of 7. Find the probability that fewer than six tickets are written on a randomly selected day.
A) 0.699292 B) 0.300708 C) 0.449711 D) 0.550289
Polytomies represent uncertainty about phylogenetic relationships
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