Suppose the length of songs in my playlist are uniformly distributed between 2.5 and 5 minutes. What is the standard deviation? Round answer to 3 decimal places (i. e. 0.123) If I sample 10 songs, what is the probability that the average song length is more than 3.5 minutes? Round answer to 3 decimal places (1.e. 0.123)

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Step-by-step explanation:

answer: 10 meter

step-by-step explanation:

need details

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for