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Free throws A basketball player has probability 0.75 of making a free throw. Explain how you would use each chance device to simulate one free throw by the player. (a) A six-sided die (b) Table D of random digits (c) A standard deck of playing cards

Short Answer

Expert verified
(a) Roll a die and count 1-4 as success; (b) use digits 0-6 as success; (c) use 39 defined cards for success.

Step by step solution

01

Define Success Probability for Dice

The basketball player has a 0.75 probability of making a shot. For a six-sided die, the probability needs to be translated into the possible outcomes. If each side of the die has an equal probability of 1/6, consider how to use the outcomes 1-4 to represent a made shot.
02

Use the Die to Simulate a Shot

Roll the six-sided die. Assign the numbers 1, 2, 3, and 4 to represent a successful free throw, corresponding to the 0.75 probability. Assign 5 and 6 to represent a missed free throw. This set up matches 4 out of 6 outcomes (i.e., 2/3 = 0.6667, which is approximate to 0.75).
03

Define Success Probability for Random Digits

Table D consists of random digits from 0 to 9. To represent a probability of 0.75, allocate 7 of these numbers to success. You can use digits 0 to 6 to represent a successful shot and digits 7 to 9 to represent a missed shot.
04

Use Table D to Simulate a Shot

Select a random digit from the table. If the digit is between 0 and 6 (inclusive), it represents a made shot. If it is 7, 8, or 9, it indicates a missed shot.
05

Define Success Probability with Playing Cards

A standard deck has 52 cards. To simulate the 0.75 probability, we approximate by using the 39 cards (52 * 0.75). Assign all cards from Ace to ten of clubs, diamonds, and hearts as successful shots (these total 30 cards), plus the remaining nine cards from spades.
06

Use Cards to Simulate a Shot

Shuffle a deck of cards and draw one card. If you draw an Ace to ten of clubs, diamonds, or hearts, or any 9 cards from spades as previously identified, the shot is successful. Any other card drawn represents a missed shot.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Random Digits
Random digits can be an incredibly useful tool when simulating probability scenarios like free throws in basketball. Essentially, random digits are numbers selected without any consistent pattern, usually ranging from 0 to 9. These can often be found in a table or generated through computer software.

In our basketball scenario, where a player has a 0.75 probability of making a shot, we can use these digits to simulate whether a free throw is successful. By assigning digits 0 to 6 out of a possible 0 to 9 as successful attempts, we align closely with our needed probability of 0.75.

To execute the simulation, one must simply choose a random digit. If the digit falls within our defined range (0 to 6), it equates to the player successfully making a basket. If the digit is 7, 8, or 9, it indicates a missed shot. This method is not only effective but also quite straightforward for simulating random events.
Six-Sided Die
A six-sided die is a simple, tangible tool used to represent various probabilities. Each side of the die has an equal chance of 1/6, making it an intriguing device for probability tasks, despite being limited by its number of sides.

In our example of simulating a basketball free throw with a 0.75 success rate, we approximate this probability through the die's outcomes. By assigning four of the six sides (1, 2, 3, and 4) to signify a successful throw, we achieve a rough match. This gives us a probability of 4/6 or approximately 0.67.

Although this probability is not perfectly 0.75, it's a helpful way to simulate the player's performance within the constraints of a six-sided die. Rolling the die shows us whether the player makes or misses the shot, based on the number rolled.
Standard Deck of Cards
A standard deck of playing cards consists of 52 cards, separated into four suits with 13 ranks each. Each card holds an equal chance of being drawn, making card decks versatile for probability simulations.

To simulate the given 0.75 free throw probability, we approximate by using 39 cards, which represents about 75% of the deck. For our example, we'll consider all ranked cards from Ace to ten in the suits of clubs, diamonds, and hearts as successful shots. This totals 30 cards.

We then add nine more cards from the spades suit to reach the number 39, to complete our 75% representation. By shuffling the deck and drawing one card, if it belongs to the identified successful cards, the player makes the shot. Any other card drawn will reflect a missed attempt. Through this approach, cards become a unique and effective way to simulate free throw outcomes.
Free Throw Probability
Free throw probability is a concept that allows us to predict the likelihood of a player making a shot from the free throw line. In our scenario, we're using a probability of 0.75, meaning the player is expected to make the shot 75% of the time.

Understanding and simulating this probability helps us to explore how shot success can be affected by various random factors. By using tools such as dice, random digits, or playing cards, we can create models to mirror real-life scenarios. These models allow us to see how often a player might score over multiple attempts, even with a probabilistic framework in place.

Simulating probability helps in both understanding the mathematics behind the scenes and in preparing strategies based on likely outcomes. By applying these tools practically, such as predicting game strategies or training regimens, we enhance our understanding of the role of chance and skill in sports.

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