Assume that 31.2% of people have sleepwalked. assume that in a random sample of 1540 adults, 519 have sleepwalked. a. assuming that the rate of 31.2% is correct, find the probability that 519 or more of the 1540 adults have sleepwalked. b. is that result of 519 or more significantly high? c. what does the result suggest about the rate of 31.2%?

no problobm

step-by-step explanation:

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

c.)

step-by-step explanation:

answer:   2 multiplied by x =24

step-by-step explanation: