The table below shows the average attendance of school events by the day of the week on which they are held. Average Attendance at School Events

Thursday Friday

School Play 300 x

Band Concert 184 250

Which values of x will indicate an association between the two variables in the two-way table? Select the three correct answers.

250

304

407

422

714

Write 17/20 as a decimal and as a percent.

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

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