When adults with smartphones are randomly selected, 54% use…

When adults with smartphones are randomly selected, 54% use them in meetings or classes (Based on data from a previous Smartphone survey).  If 10 adult smartphone users are randomly selected. Let X be the variable the number of adults that use smartphones in  meetings or classes in a sample of 10 adults with smartphone (Select all that apply)    

A farmer who sponsors a contest supplies a pumpkin for each…

A farmer who sponsors a contest supplies a pumpkin for each of the contest participants. The pumpkins weigh an average of 20 pounds with a standard deviation of 5 pounds and the distribution of pumpkin weights can be assumed to follow approximately a normal distribution. Pumpkins that fall in the top 30% of weights are considered “large”. How much does a pumpkin have to weigh in order to be considered “large”?   .

Nitrifying bacteria participate in the nitrogen cycle mainly…

Nitrifying bacteria participate in the nitrogen cycle mainly by  A) converting nitrogen gas to ammoniaB) releasing ammonium from organic compounds, returning it to the soilC) converting ammonium to nitrate, which plants absorbD) incorporating nitrogen into amino acids and organic compounds