A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were included from Area A, nine from Area B, and twelve from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level? Multiple Choice The mean hourly wages of unskilled employees of all areas are equal. The mean hourly wages in at least two metropolitan areas are different. More degrees of freedom are needed. None of these is correct.

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.

we can set up an equation to find the girls' ages. the equation is         28=0.5x-5+x. (comment if you need me to explain how i got this equation.) so, you add x and 0.5x to get 1.5x and add 5 to each side. your new equation is 33=1.5x. now divide both sides of the equation by 1.5 to get 22=x. because x is mary's age, to find jasmine's age we subtract mary's age from 28. we find that mary is 22 years old and jasmine is 6 years old.