If the mean and variance of a binomial distribution are 4 and 2 respectively. Find the probability of exactly 2 successes.
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- The life of light bulbs is distributed normally. The variance of the lifetime is 900 and the mean lifetime of a bulb is 550 hours. Find the probability of a bulb lasting for at least 583 hours. Round your answer to four decimal placesIn the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park 71 % of the time. Find the probability that among 11 guests surveyed exactly 3 guests like to stay at an overnight lodge in the park. P(x = 3) =In a Calculus class, the final exam scores were normally distributed with a mean of 63 and a standard deviation of 5. If you are randomly selected, what is the probability that you will score more than 65 on the exam? Identify the type of probability distribution shown in the problem Identify the given in the problem and solve for the probability.
- When marketing a new product, a company conducts a taste survey. A recent survey of 399 respondents revealed that 83.38% liked the bread. Determine the variance of the probability distribution. Round your answer to 2 decimal places.You have a uniform distribution whose lowest value is 7 and whose highest value is 15. Find the probability that a randomly selected number from this distribution will be between 9.3 and 10.6.While gathering eggs one day, Lisa has 15 eggs when Liana has 20 eggs at the moment when they started throwing them at each other. If 10% of the eggs are rotten, use the Binomial Distribution to calculate the probability that Lisa was hit by 3 or fewer rotten eggs from Liana.
- When X is a binomial random variable, the mean of the probability distribution = np. A jury has 12 people on the jury. If a certain town has a population that is 9 percent a certain race, how many people of that race would you expect would be on the jury if jury selection was random (and every person was equally likely to be on the jury). Round answers to 4 decimal places as needed.determine whether the given procedure results in a binomial distribution. if not, give the reason. Rolling a single die 34 times, keeping track of the number of 3s that are rolled.The cumulative probability for the entire binomial distribution does not have to sum to 1. True or False.
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