Statistics Problem Solving

Statistics Problem Solving-90
Switching raised that probability to two in three that you'll select a car.Said another way: A player whose strategy is to always switch will only lose when the door they initially selected has a car behind it.Even more, consider the ante in a game of poker, which is a similar system designed to accelerate a winner.

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A contestant who selects either of the two doors with a goat behind it and then switches will always get the car.

Here's a final way to look at it, provided the contestant selected Door #1 Door 1 Door 2 Door 3 Result if Stay #1 Result if Switch Car Goat Goat Car Once the population of an office hits 366 people, it's a certainty that two people in your office have the same birthday, since there are only 365 possible days of birth. Instead of calculating the probability that two people share a birthday, instead calculate the converse, probability that two people don't share a birthday. The probability of the second person not sharing a birthday with the first is 364/365.

Every time he wins, he raises his stake to a certain fraction, 1/N, of his bankroll, where N is a positive number. ANSWER: HE'LL LOSE EVERYTHING When it comes down to it, if our gambler bets 1/N of his bankroll each time and then maintains the amount as he loses, the gambler is N losing bets in a row away from bankruptcy.

The gambler doesn't reduce his stake when he loses Every time he wins, he'll raise his stake to $B/N, or his bankroll divided by N. Assuming that the player keeps on playing and there is some chance that the player can lose -- we are gambling, after all -- then the player remains N losing bets away from a broken bank each time.

He has to review the damage of the planes to see which areas must be protected even more.

List Of Search Engines For Research Papers - Statistics Problem Solving

Abraham finds that the fuselage and fuel system of returned planes are much more likely to be damaged by bullets or flak than the engines. ANSWER: PROTECT THE PARTS THAT DON'T HAVE DAMAGE Abraham Wald, a member of the Statistical Research Group at the time, saw this problem and made an unconventional suggestion that saved countless lives.Now think carefully about the four steps listed above.How would you carry out each step in order to answer your question? In this video segment, group members use the data they collected to answer their statistical question.Still, assuming that each birth date (except February 29) is equally likely, it turns out that once your office has 57 people in it there is a 99% chance that two of them share a birthday. Since these are mutually exclusive scenarios, first probability plus the second probability has to equal 1. The probability of the third person not sharing a birthday with the first or second is 363/365.Going through the office and multiplying these together, we see this: 365/365 x 364/365 x 363/365 x 362/365 x ... So, the probability that nobody in an office of 23 people share a birthday is 0.4927, or 49.3%.You obtain data by measuring something, so your measurement methods must be chosen with care.Sampling is one way to collect data; experimentation is another.When B= 00 and N=4, for example, he'll gamble 0 each time going forward. If our gambler sounds like something of an idiot, know that this is actually a rather common betting strategy.Casinos also endorse it by ensuring that players are stocked with mostly high denominational chips as they go on winning streaks in order to encourage higher bets.By asking and answering statistical questions, we can learn more about the world around us.Statistics is used every day to help us gain insight into questions that affect our lives: Is our population growing or shrinking? Will eating more fruits and vegetables really make us live longer?


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