The following list contains some common polyatomic lons. Using the charge on these lons and the idea of valence, predict the formulas for the following:
nitrate
NO 3
phosphate
PO 3
sulfate
SO, 2
acetate
C₂H₂O21
ammonium
NH4
chromate
Cro-2
carbonate
CO, -2
dichromate Cr 20,-2
permanganate MnO4

Arecent study focused on the number of times men and women who live alone buy take-out dinner in a month. assume that the distributions follow the normal probability distribution and the population standard deviations are equal. the information is summarized below. statistic men women sample mean 24.85 21.33 sample standard deviation 5.54 4.93 sample size 34 36 at the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? state the decision rule for 0.01 significance level: h0: μmen= μwomen h1: μmen ≠ μwomen. (negative amounts should be indicated by a minus sign. round your answers to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? what is the p-value? (round your answer to 3 decimal places.)