The number of motor-vehicle fatalities in a city during a week is poissondistributed, with an average of 8 fatalities per week.

a) what is the probability that 12 fatalities occur in a specific week?
b) what is the probability that at least 12 fatalities occur in a specific week?
c) how many motor-vehicle fatalities would have to occur during a given week to conclude there are an unusually high number of events in that week?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.