Of the articles produced by a certain machine, 3% are too big, and 2% are too small. What is the probability that an article chosen at random is of the right size?
Of the articles produced by a certain machine, 3% are too big, and 2% are too...
The correct size of a nickel is 21.21 millimeters. Based on that, the data can be summarized into the following table:Too SmallToo LargeTotalLow Income202040High Income241135Total443175c) If 5 children are chosen at random, the probability that at least one would draw the nickel too small is:d) If 110 children are chosen at random, it would be unusual if more than [how many?] drew the nickel too small.
The weight of snickers produced by a certain machine follows a normal distribution with an average weight of 6 oz and a standard dev of 0.06. We need to find the sample size . IF we want the probability of getting a sample mean under 5.98 to be .03 what sample size should be used.
(2 points) The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 8 ounces and standard deviation 0.2 ounces. (a) What is the probability that the average weight of a random sample of 4 of these chocolate bars will be between 7.8 and 8.17 ounces? ANSWER: (b) For a random sample of of these chocolate bars, find the value L such that P(ã < L) = 0.0281. ANSWER:
At a factory that produces pistons for cars, Machine 1 produced 792 satisfactory pistons and 198 unsatisfactory pistons today. Machine 2 produced 540 satisfactory pistons and 360 unsatisfactory pistons today. Suppose that one piston from Machine 1 and one piston from Machine 2 are chosen at random from today's batch. What is the probability that the piston chosen from Machine 1 is satisfactory and the piston chosen from Machine 2 is unsatisfactory ?
A) The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What is the probability that the diameter of a randomly selected pencil will be between 0.21 and 0.29 inches? B) The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What is the probability that the diameter of a...
At a factory that produces pistons for cars, Machine 1 produced 189 satisfactory pistons and 21 unsatisfactory pistons today. Machine 2 produced 60 satisfactory pistons and 40 unsatisfactory pistons today. Suppose that one piston from Machine 1 and one piston from Machine 2 are chosen at random from today's batch. What is the probability that the piston chosen from Machine 1 is unsatisfactory and the piston chosen from Machine 2 is satisfactory ? Do not round your answer. (If necessary,...
At a factory that produces pistons for cars, Machine i produced 369 satisfactory pistons and 41 unsatisfactory pistons today. Machine 2 produced 350 satisfactory pistons and 150 unsatisfactory pistons today. Suppose that one piston from Machine 1 and one piston from Machine 2 are chosen at random from today's batch. What is the probability that the piston chosen from Machine 1 is unsatisfactory and the piston chosen from Machine 2 is satisfactory? Do not round your answer. (If necessary, consult...
The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 8.3 ounces and standard deviation 0.2 ounces. (a) What is the probability that the average weight of a bar in a simple random sample of five of these chocolate bars is between 8.17 and 8.48 ounces? (b) For a simple random sample of five of these chocolate bars, what is the level L such that there is a 5 % chance that...
(1 point) The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 8.2 ounces and standard deviation 0.13 ounces. (a) What is the probability that the average weight of a bar in a Simple Random Sample (SRS) with four of these chocolate bars is between 8.08 and 8.4 ounces? (b) For a SRS of four of these chocolate bars, what is the level L such that there is a 3% chance that...
(1 point) The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.7 ounces and standard deviation 0.19 ounces. (a) What is the probability that the average weight of a bar in a Simple Random Sample (SRS) with 4 of these chocolate bars is between 7.54 and 7.87 ounces? ANSWER: (b) For a SRS of 4 of these chocolate bars, what is the level L such that there is a 3% chance...