The owner of a fish market has an assistant who has determined that the weights of...
The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed with a mean of 3.2 pounds and a standard deviation of .8 pounds. There is an 85% chance that the sample mean for a sample size of 64 is below how many pounds?
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The owner of a fish market has an assistant who has determined
that the weights of...
2.) The owner of a fish market has an assistant who has determined that the weights...
2.) The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 1 pound. what percentage ( to one decimal place) of samples of 4 fish will have sample means between 3.0 and 4.0 pounds?
The owner of a fish market determined that the mean weight for a catfish is 3.2...
The owner of a fish market determined that the mean weight for a catfish is 3.2 pounds with a standard deviation of 0.8 pound. Assuming the weights of catfish are normally distributed, what is the probability that a randomly selected catfish will weigh between 2 and 4 pounds?
The owner of a fish market finds that the mean weight for a catfish is 3.2...
The owner of a fish market finds that the mean weight for a catfish is 3.2 pounds with a standard deviation of 0.8 pounds. Assume that the weights of the catfish are normally distributed. You buy a sample of 25 catfish. What is the probability that the mean weight of the 25 catfish is less than 3 pounds?
1.) Major league baseball salaries averaged $1.5 million with a standard deviation of $1 million in...
1.) Major league baseball salaries averaged $1.5 million with a standard deviation of $1 million in 1994. Suppose a sample of 100 major league players was taken. Find the approximate probability that the average salary of the 100 players exceeded $1.27 million. 2.) The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 1 pound. what percentage ( to one decimal...
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...
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...
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...
1)Dog weights. Adult German shepherd weights are normally distributed with mean of 73 pounds and standard...
1)Dog weights. Adult German shepherd weights are normally distributed with mean of 73 pounds and standard deviation of 8 pounds. (a) The bottom 24% of weights are below what weight? _________ (b) 76% of weights are above what weight?___________ (c) The top 24% of weights are above what weight? ___________ (Round answers to one decimal place) 2)A distribution of values is normal with a mean of 60 and a standard deviation of 7. Find the interval containing the middle-most 82%...
The weights of college football players are normally distributed with a mean of 200 pounds and...
The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds. b. What is the standard score of the sample mean of 170 pounds? c. What is the probability that the mean of a sample of size 15 will be more than 170 pounds? d. What is the standard score of a sample mean of 220 pounds? e. What is the probability that the mean of a sample of size...
2) From past experience, a restaurant owner has determined that 40% of those who visit her...
2) From past experience, a restaurant owner has determined that 40% of those who visit her restaurant will spend at least $125. If 8 people will visit her restaurant tomorrow, find the probability that: (a) 4 will spend at least $125 (b) at least 7 will spend less than $125 (c) less than 7 spend at least $125 5) An applicant for a job has to take an aptitude test. Suppose that the time it takes to finish the test...
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