/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 35 A basketball player claims to ma... [FREE SOLUTION] | 91Ó°ÊÓ

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A basketball player claims to make \(47 \%\) of her shots from the field. We want to simulate the player taking sets of 10 shots, assuming that her claim is true. Twenty-five repetitions of the simulation were performed. The simulated number of makes in each set of 10 shots was recorded on the dotplot below. What is the approximate probability that a \(47 \%\) shooter makes 5 or more shots in 10 attempts? (a) \(5 / 10\) (b) \(3 / 10\) (c) \(12 / 25\) (d) \(3 / 25\) (e) \(47 / 100\)

Short Answer

Expert verified
(c) \(12 / 25\)

Step by step solution

01

Understand the problem

We need to find the probability that a player who makes 47% of their shots makes 5 or more of them in a set of 10 shots. This is based on a simulation with 25 repetitions.
02

Analyze the simulation data

The problem states that the number of makes in each set of 10 shots was recorded in a dotplot from 25 repetitions. Our task is to use this information to identify how many of these repetitions resulted in 5 or more successful shots.
03

Count the favorable outcomes

Count the number of sets from the simulation where the player makes 5 or more shots. This involves identifying how many dots on the dotplot correspond to 5 or more successful shots.
04

Calculate the probability

Divide the number of successful outcomes (making 5 or more shots) by the total number of repetitions (25). This will give us the empirical probability based on the simulation.
05

Match the answer with options

Compare your calculated probability with the provided answer choices to select the correct one.

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Key Concepts

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

Empirical Probability
Empirical probability is an approach to probability that relies on actual experimental data, rather than theoretical calculations. In contrast to theoretical probability, which is deduced from known quantities or mathematical principles, empirical probability is calculated by observing and recording outcomes of real or simulated events.

For instance, if we want to know the likelihood of a basketball player making 5 or more shots out of 10 attempts, as in our exercise, we conduct a simulation. During the simulation, we collect data on the number of successful shots in multiple trials, or repetitions. Once we gather this data, the empirical probability is calculated by dividing the number of successful outcomes by the total number of trials conducted. This gives us a practical, data-driven answer to our probability question that is based on observed results.

In our example, if the dotplot shows that there are 12 trials where the player made 5 or more shots out of 25 trials, the empirical probability would be \( \frac{12}{25} \). This means that based on the simulation, there is about a **48% chance** that the player makes 5 or more shots.
Simulation Repetition
Simulation repetition is a critical step in understanding outcomes that are based on chance. By repeating a scenario many times, we can gather a reliable set of data that reflects real-world variability. In probability analysis, it’s important to simulate multiple repetitions to achieve statistical reliability and accuracy.

Each repetition in a simulation involves performing the same action under the same initial conditions. For the basketball exercise, this meant simulating 10 shots for a player, 25 times, to gather data that reflects how often certain outcomes occur. The more repetitions we perform, the more robust our empirical data set becomes. This helps to smooth out anomalies and gives us a clearer picture of the likelihood of each potential outcome.

Through simulation repetition, we can gather diverse results that encapsulate the range of possibilities. When we analyze these results, such as counting how many scenarios result in 5 or more shots made, we are able to approximate real-world probability with increasing confidence.
Basketball Statistics
Basketball statistics offer more than just records; they provide insights into player performance and tendencies. Even though players may have varying shooting percentages, simulations help us to understand potential outcomes and probabilities tied to different performance levels.

In the context of our exercise, the basketball player's shooting percentage is set at 47%. This statistic means that in the long run, the player makes 47% of her shots. However, it is crucial to note that statistics are about averages and expectations over time. In any given set of 10 shots, the player might do better or worse. This variability is where the power of probability simulations becomes evident.

By analyzing the player's performance over repeated trials, we get a sense of the range of possible outcomes within specific attempts. Each dot in our simulation's dotplot correlates to a specific shooting outcome, illustrating how actual performances may align with the statistical expectation over several games or shooting sets.
Dotplot Analysis
Dotplot analysis is a visual interpretation technique used to display frequency distribution in an intuitive manner. It arranges data points along a simple number line, where each dot represents an outcome frequency. This type of analysis is particularly useful for small to medium-sized data sets, like the 25 trials in our basketball simulation.

In our scenario, each dot on the dotplot corresponds to a set of 10 shots. By analyzing the arrangement of dots, we can quickly identify how often the player made 5 or more shots. Embedding this analysis visually helps to underscore trends and patterns within the dataset.

Dotplot analysis allows for quick comprehension and offers an immediate visual cue to the probabilities involved. In cases like ours, pinpointing the locations of dots can help identify the frequency of a player making 5 or more shots. Counting these dots provides the numerator for evaluating empirical probability, while the total number of dots (25 trials) acts as the denominator.

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Most popular questions from this chapter

Mac or \(\mathrm{PC}\) ? A recent census at a major university revealed that \(40 \%\) of its students mainly used Macintosh computers (Macs). The rest mainly used PCs. At the time of the census, \(67 \%\) of the school's students were undergraduates. The rest were graduate students. In the census, \(23 \%\) of respondents were graduate students who said that they used \(\mathrm{PCs}\) as their main computers. Suppose we select a student at random from among those who were part of the census. (a) Make a two-way table for this chance process. (b) Construct a Venn diagram to represent this setting. (c) Consider the event that the randomly selected student is a graduate student and uses a Mac. Write this event in symbolic form based on your Venn diagram in part (b). (d) Find the probability of the event described in part (c). Explain your method.

Languages in Canada Canada has two official languages, English and French. Choose a Canadian at random and ask, "What is your mother tongue?" Here is the distribution of responses, combining many separate languages from the broad Asia/Pacific region: $$\begin{array}{lcccc}\hline \text { Language: } & \text { English } & \text { French } & \text { Asian/Pacific } & \text { 0ther } \\\\\text { Probability: } & 0.63 & 0.22 & 0.06 & ? \\\\\hline\end{array}$$ (a) What probability should replace "?" in the distribution? Why? (b) What is the probability that a Canadian's mother tongue is not English? (c) What is the probability that a Canadian's mother tongue is a language other than English or French?

Urban voters The voters in a large city are \(40 \%\) white, \(40 \%\) black, and \(20 \%\) Hispanic. (Hispanics may be of any race in official statistics, but here we are speaking of political blocks. A mayoral candidate anticipates attracting \(30 \%\) of the white vote, \(90 \%\) of the black vote, and \(50 \%\) of the Hispanic vote. Suppose we select a voter at random. (a) Draw a tree diagram to represent this situation. (b) Find the probability that this voter votes for the mayoral candidate. Show your work. (c) Given that the chosen voter plans to vote for the candidate, find the probability that the voter is black. Show your work.

Lost Internet sites Internet sites often vanish or move, so that references to them can't be followed. In fact, \(13 \%\) of Internet sites referenced in major scientific journals are lost within two years after publication. \({ }^{22}\) If we randomly select seven Internet references, from scientific journals, what is the probability that at least one of them doesn't work two years later?

Probability models? In each of the following situations, state whether or not the given assignment of probabilities to individual outcomes is legitimate, that is, satisfies the rules of probability. If not, give specific reasons for your answer. (a) Roll a 6-sided die and record the count of spots on the up-face: \(P(1)=0, P(2)=1 / 6, P(3)=1 / 3, P(4)=$$$1 / 3, P(5)=1 / 6, P(6)=0$$(b) Choose a college student at random and record gender and enrollment status: \)P(\( female full-time \))=0.56\(, \)P(\( male full-time \))=0.44, P(\( female part-time \))=0.24\( \)P(\( male part-time \))=0.17\( (c) Deal a card from a shuffled deck: \)P(\( clubs \))=12 / 52\(, \)P(\( diamond \)s)=12 / 52, P(\( heart \))=12 / 52, P(\( spades \))=\( \)16 / 52$

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