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Probability
Weight of trout in a fish farm follows the distribution N (200, 502). A trout is randomly selected.a. What is the probability that its weight does not exceed 175g?b. What is the probability that its weight is greater than 230g?c. What is the probability that its weight is between 225g and 275g?d. What is the probability that out of eight trout selected randomly from the fish farm, less than three of them will not weigh more than 175g?
Probability question
The owner of a fish market determined that the mean weight for a catfish is 3.2 pounds assuming that the weight of a catfish follows a normal distribution and its standard deviation is unknown. He also knew that that probability of a randomly selected catfish that would weigh more than 3.8 pounds is 20% and the probability that a randomly selected catfish that would weigh less than 2.8 pounds is 30%. What is the probability that a randomly selected catfish...
The weight, in kg, of fish in a lake follows a normal distribution with mean 2...
The weight, in kg, of fish in a lake follows a normal distribution with mean 2 and standard deviation 0.5 a) What is the probability that a randomly selected fish weights less than lkg? b) Find the value, w, of the weight of a fish such that 95% of the fish weigh ess than w.
10) In a left-tailed test comparing two means with unknown variances assumed to be equal, the...
10) In a left-tailed test comparing two means with unknown variances assumed to be equal, the test statistic was t = -1.81 with sample sizes of n1 = 8 and n2 = 12. The p-value would be: Select one: a. between .025 and .05 b.between .01 and .025 c.between .05 and .10 d. Must know α to answer The owner of a fish market determined that the weights of catfish are normally distributed, with a mean of 3.2 pounds and...
Ski Gondola find the probability
2. A ski gondola in Vail, CO, carries skiers to the top of a mountain. It bears a plaque stating the maximum capacity is 12 people of 2004 pounds. That capacitywill be exceeded if 12 people have weights with a mean greater than 2004/12 = 167 pounds. Because men tend to weigh more than women, a “worse case” scenarioinvolves 12 passengers who are all men. Men have weights that are normally distributed with a mean of 172 pounds with a...
Dr. I.C. Trout, a professional ichthyologist, is studying a population of catfish with his assistant, Etta...
Dr. I.C. Trout, a professional ichthyologist, is studying a population of catfish with his assistant, Etta Bass. Trout and Bass have established the mean weight for a catfish is 3.2 pounds, with a standard deviation of 0.8 pounds. Weights of catfish are normally distributed. Solve the following: A. What is the probability that a catfish will weigh more than 4.4 pounds? B. What is the probability that a catfish will weigh between 3 and 5 pounds? C. What is the...
A candy maker produces mints whose weight follows a normal distribution with mean 21:37g and standard...
A candy maker produces mints whose weight follows a normal
distribution with mean
21:37g and standard deviation 0:4g. Suppose 15 mints are selected
at random. Let Y be
the number of mints among them that weigh less than 20:857g. Then,
P(Y 2) = 0:816.
True False
A candy maker produces mints whose weight follows a normal distribution with mean 21.37g and standard deviation 0.4g. Suppose 15 mints are selected at random. Let Y be the number of mints among them...
The weights of a certain brand of candies are normally distributed with a mean weight of...
The weights of a certain brand of candies are normally distributed with a mean weight of 0.8614 g and a standard deviation of 0.0511 g. A sample of these candies came from a package containing 447 candies, and the package label stated that the net weight is 381.4 g. (lf every package has 447 candies, the mean weight of the candies must exceed 381.4 0.8532 g for the net contents to weigh at least 381.4 g.) 447 a. If 1...
#9 The capacity of an elevator is 15 people or 2445 pounds. The capacity will be...
#9
The capacity of an elevator is 15 people or 2445 pounds. The capacity will be exceeded if 15 people have weights with a mean greater than 2445/15 163 pounds. Suppose the people have weights that are normaly distributed with a mean of 166 lb and a standard deviation of 28 lb. a. Find the probability that if a person is randomly selected, his weight will be greater than 163 pounds The probability is approximately (Round to four decimal places...
A population is normally distributed with μ=200 and σ=25. a. Find the probability that a value...
A population is normally distributed with μ=200 and σ=25. a. Find the probability that a value randomly selected from this population will have a value greater than 245. b. Find the probability that a value randomly selected from this population will have a value less than 190. c. Find the probability that a value randomly selected from this population will have a value between 190 and 245.
The weight, in kg, of fish in a lake follows a normal distribution with mean 2 and standard deviation 0.5 a) What is the probability that a randomly selected fish weights less than lkg? b) Find the value, w, of the weight of a fish such that 95% of the fish weigh ess than w.
A candy maker produces mints whose weight follows a normal
distribution with mean
21:37g and standard deviation 0:4g. Suppose 15 mints are selected
at random. Let Y be
the number of mints among them that weigh less than 20:857g. Then,
P(Y 2) = 0:816.
True False
A candy maker produces mints whose weight follows a normal distribution with mean 21.37g and standard deviation 0.4g. Suppose 15 mints are selected at random. Let Y be the number of mints among them...
The weights of a certain brand of candies are normally distributed with a mean weight of 0.8614 g and a standard deviation of 0.0511 g. A sample of these candies came from a package containing 447 candies, and the package label stated that the net weight is 381.4 g. (lf every package has 447 candies, the mean weight of the candies must exceed 381.4 0.8532 g for the net contents to weigh at least 381.4 g.) 447 a. If 1...
#9
The capacity of an elevator is 15 people or 2445 pounds. The capacity will be exceeded if 15 people have weights with a mean greater than 2445/15 163 pounds. Suppose the people have weights that are normaly distributed with a mean of 166 lb and a standard deviation of 28 lb. a. Find the probability that if a person is randomly selected, his weight will be greater than 163 pounds The probability is approximately (Round to four decimal places...
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