In a survey of 3,774
adults concerning complaints about restaurants,
1,501
complained about dirty or ill-equipped bathrooms and
1,195
complained about loud or distracting diners at other tables. Complete parts (a) through (c) below.
a. Construct a
90%
confidence interval estimate of the population proportion of adults who complained about dirty or ill-equipped bathrooms.

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60

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

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20