Suppose the amount of time that it takes to assemble Disco Barbie ranges from 47 to...
The mean time to assemble a piece of furniture is 52 minutes. Suppose the the assembly times are normally distributed with a standard deviation of 4.3 minutes. What percentage of assembly times fall between 47.7 minutes and 56.3 minutes? Use the Empirical Rule 16% 68% 99.7% 95%
The time it takes to assemble a component on a factory assemble line is normally distributed with a man of 3.1 minutes and a standard deviation of 0.6 minutes. Find the probability that a randomly selected employee will take between 2.0 and 2.3 minutes? Answer In a Sentence Question 7: The following data gives the information of the number of children that could complete an activity in the specified time. Construct a histogram with probabilities. Time No. of Children 30...
The time required to assemble an electronic component is normally distributed with a mean and a standard deviation of 21 minutes and 10 minutes, respectively. [You may find it useful to reference the z table.] a. Find the probability that a randomly picked assembly takes between 13 and 22 minutes. (Round " value to 2 decimal places and final answer to 4 decimal places. Probability b. It is unusual for the assembly time to be above 35 minutes or below...
Ch 6 #10: please assist with answers for a and b:\ The time required to assemble an electronic component is normally distributed with a mean and a standard deviation of 22 minutes and 8 minutes, respectively. [You may find it useful to reference the z table.] a. Find the probability that a randomly picked assembly takes between 14 and 26 minutes. (Round "z" value to 2 decimal places and final answer to 4 decimal places.) Probability:______________________ b. It is unusual...
The time required to assemble an electronic component is normally distributed, with a mean of 12 minutes and a standard deviation of 1.5 minutes. Find the probability that a particular assembly take less than 10 minutes. a. 0.6542 b. 0.0918 c. 0.8164 d. 0.9082 e. 0.4541
A manufacturer of power tools believes that the mean amount of time required to assemble their top-of-the-line table saw is 80 minutes with a standard deviation of 40 minutes. Suppose a random sample of 64 purchasers of this table saw is taken. The management is planning to use the assembly time in advertising and promotion of the product and the competitors have an average of 90 minutes assembly time. That’s why they are interested in determining the probability that the...
5. Suppose that annual precipitation is uniformly distributed, and ranges between 25 inches and 72 inches. (a) What is the probability that a year will have between 29 and 44 inches of precipitation? (2) (b) What is the 30th percentile of this distribution? (2) 6. Wheat yields per acre are normally distributed, with mean 46 bushels, and standard deviation 10 bushels. (a) What is the probability that next year’s yield is between 35 and 50 bushels? (2) (b) What is...
The time it takes a student to finish a chemistry test is uniformly distributed between 50 and 70 minutes. What is the probability density function for this uniform distribution? Find the probability that a student will take between 40 and 60 minutes to finish the test. Find the probability that a student will take no less than 55 minutes to finish the test. What is the expected amount of time it takes a student to finish the test? What is...
Suppose that the commuting time on a particular train is uniformly distributed between 42 and 62 minutes. Bold a. What is the probability that the commuting time will be less than 49 minutes? Bold b. What is the probability that the commuting time will be between 45 and 55 minutes? Bold c. What is the probability that the commuting time will be greater than 58 minutes? Bold d. What are the mean and standard deviation of the commuting time?
A} According to a survey, it takes .7 second to download the home page website. Suppose that the download time was normally distributed with a standard deviation of .2 seconds. If you select a random sample of 23 download times, the probability is 89% that the sample mean is less than what value?