Identify the type of sample used.

an electronics store sends out a survey to the people on its mailing list asking them about their favorite brands of televisions.

a.
convenience

b.
simple random

c.
stratified random

d.
systematic

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Which of the choices shown could be used to prove that aacp=abcp ?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables