Ten measurements of impact energy on specimens of a238 steel at 60 ºc are as follows: 64.1, 64.7, 64.5, 64.6, 64.5, 64.3, 64.6, 64.8, 64.2, and 64.3 j. a. use the student’s t distribution to find a 95% confidence interval for the impact energy of a238 steel at 60 ºc. b. use the student’s t distribution to find a 98% confidence interval for the impact energy of a238 steel at 60 ºc.

56

step-by-step explanation:

that is the sum

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there are no other answers without knowing the variables values

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

i think its a and d

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