A leasing firm claims that the mean number of miles driven annually, μ, in its leased cars is less than 12,340 miles. A random sample of 60 cars leased from this firm had a mean of 12,147 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 2,450 miles. Is there support for the firm's claim at the 0.01 level of significance?

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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

answer: this is not a question

step-by-step explanation: this is a answer