# Question

According to Krantz (1992), the probability of being injured by lightning in any given year is 1/685,000. Assume that the probability remains the same from year to year and that avoiding a strike in one year doesn’t change your probability in the next year.

a. What is the probability that someone who lives 80 years will never be struck by lightning? You do not need to compute the answer, but write down how it would be computed.

b. According to Krantz, the probability of being injured by lightning over the average lifetime is 1/9100. Show how that probability should relate to your answer in part (a), assuming that average lifetime is about 80 years.

c. Do the probabilities given in this exercise apply specifically to you? Explain.

d. Over 300 million people live in the United States. In a typical year, assuming Krantz’s figure is accurate, about how many people out of 300 million would be expected to be struck by lightning?

a. What is the probability that someone who lives 80 years will never be struck by lightning? You do not need to compute the answer, but write down how it would be computed.

b. According to Krantz, the probability of being injured by lightning over the average lifetime is 1/9100. Show how that probability should relate to your answer in part (a), assuming that average lifetime is about 80 years.

c. Do the probabilities given in this exercise apply specifically to you? Explain.

d. Over 300 million people live in the United States. In a typical year, assuming Krantz’s figure is accurate, about how many people out of 300 million would be expected to be struck by lightning?

## Answer to relevant Questions

Suppose you have to cross a train track on your commute. The probability that you will have to wait for a train is 1/5, or .20. If you don’t have to wait, the com mute takes 15 minutes, but if you have to wait, it takes 20 ...According to the U.S. Census Bureau, in 2012, about 68% (.68) of children in the United States were living with both parents, 24.4% (. 244) were living with mother only, 4% (.04) were living with father only, and 3.6% (.036) ...Flip a coin 100 times. Stop each time you have done 10 flips (that is, stop after 10 flips, 20 flips, 30 flips, and so on), and compute the proportion of heads using all of the flips up to that point. Plot that proportion ...Suppose that a randomization distribution resulting from the simulation of a chi-square test had 7% of the values at or above the chi- square statistic observed for the real sample. a. What is the estimated p-value for the ...In Exercise 6, the following scenario was presented. Suppose that 55% of the voters in a large city support a particular candidate for mayor and 45% do not support the candidate. A poll of 100 voters will be conducted, and ...Post your question

0