Determine whether the underlined value is a parameter or a statistic. the average score for a class of 28 students taking a calculus midterm examthe average score for a class of 28 students taking a calculus midterm exam waswas modifying 72 % with underline .72%. nothing nothing nothing

Parameter

Step-by-step explanation:

mean, standard deviation, etc of a population are parameters and of a sample are statistics. Here the population is the class of 28 students therefore the average score is a parameter

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places