Areporter bought hamburgers at randomly selected stores of two different restaurant chains, and had the number of calories in each hamburger measured. can the reporter conclude, at alpha = 0.05, that the hamburgers from the two chains have different number of calories? assume that the population standard deviations are unequal. chain a chain bsample size 7 10sample mean 255 cal 310 calsample standard deviation 23 cal 25 calwhat is the critical value of the test? round your answer to two significant places after the decimal, and if there are two critical values, only enter the larger one.

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step-by-step explanation:

, 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

what do u need to know

step-by-step explanation: