*WORD PROBLEM* A jar contains dimes and quarters. Twenty percent of the coins in the jar are dimes. A number generator simulates
randomly selecting 10 coins from the jar. The number generator is used 12 times and the number of dimes in each trial is shown in the dot plot.
Which description is correct about the number generator is fair or not?
-The number generator is not fair. The dot plot shows a distribution that is skewed right.
-The number generator is fair. The dot plot shows a distribution that is skewed right.
-The number generator is fair. It shows that 20% of the coins selected are dimes most of the time.
-The number generator is not fair. In one of the experiments, no dimes are chosen.
Which description is correct about the number generator is fair or not?
-The number generator is not fair. The dot plot shows a distribution that is skewed right.
-The number generator is fair. The dot plot shows a distribution that is skewed right.
-The number generator is fair. It shows that 20% of the coins selected are dimes most of the time.
-The number generator is not fair. In one of the experiments, no dimes are chosen.
1 answer:
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Using the binomial distribution, it is found that there is a 0.0108 = 1.08% probability of the coin landing tails up at least nine times.
<h3>What is the binomial distribution formula?</h3>The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem:
- The coin is fair, hence p = 0.5.
- The coin is tossed 10 times, hence n = 10.
The probability that is lands tails up at least nine times is given by:
In which:
Hence:
0.0108 = 1.08% probability of the coin landing tails up at least nine times.
More can be learned about the binomial distribution at brainly.com/question/24863377
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