In a certain population of the herring Pomolobus aestivalis, the lengths (in mm)
ID: 3306371 • Letter: I
Question
In a certain population of the herring Pomolobus aestivalis, the lengths (in mm) of individual fish form a symmetric, bell-shaped frequency histogram. A. Define the stochastic variable in this situation B. Describe a stochastic process that could be used in this situation. Be sure to include any assumptions that might need to make C. Consider the following expression: CN (45 54, 20.25). Fill in the following blanks with the appropriate valucs to complete the interpretation of this expression: The probability of selecting a herring that is at most lengths follow a Select an ansedistribution with an expected value of Tip! mms is given we assume that the herring and a variance of D. Express (using Function Notation) the probability that a selected herring whose length is 62mm or more extreme? E. What percent of the time (to five decimal places) will the number selected fall between 25 and 36?Explanation / Answer
Rolling a single die
1) probability of rolling divisors of 6 :
Since its a single die, the possible outcomes are 1,2,3,4,5,6. All have equal probability(1/6) since its a fair die
Out of these divisors of 6 are 1,2,3,6. So P(divisors of 6) = 1/6*1/6*1/6*1/6 = 1/1296 = 0.0008
2) probability of rolling a multiple of 1: Since all(1,2,3,4,5,6) are multiples of 6 = 1/6*1/6*1/6*1/6*1/6*1/6= 1/46656 = 0.00002
3) probability of rolling an even number : There are 3 even numbers between 1-6 i.e. 2,4,6
Hence probability of rolling an even number = 1/6*1/6*1/6 = 1/216 =0.0046
4) List of all possible outcomes of rolling a single die ={1,2,3,4,5,6}
5) probability of rolling factors of 3 : Factors of 3 are 1,3
Hence probability of rolling factors of 3 = 1/6*1/6 = 1/36 = 0.0278
6) probability of rolling a 3 or smaller : 3 or smaller are 1,2,3. Hence the probability = 1/6*1/6*1/6 = 1/216 = 0.0046
7) probability of rolling a prime number: Prime numbers between 1-6 are 2,3,5 hence probability = 1/6*1/6*1/6=1/216=0.0046
8) probability of rolling factors of 4 : Factors of 4 are 1,2,4 hence the probability = 1/6*1/6*1/6 = 1/216 =0.0046
9) probability of rolling divisors of 30 : Divisors of 30 are 1,2,3,5,6 = 1/6*1/6*1/6*1/6*1/6 = 1/7776 = 0.0001
10) probability of rolling factors of 24: Factors of 24 are 1,2,3,4,6 = 1/6*1/6*1/6*1/6*1/6=1/7776=0.0001