(1 point) The shelf life of a batteries produced by one major company are normally distributed...
(1 point) The shelf life of a batteries produced by one major company are normally distributed with a mean of 4.5 years and a standard deviation of 0.6 years. The figure below shows the distribution of shelf lives of batteries produced by one major company. Calculate the shaded area under the curve. Express your answer in decimal form with at least two decimal place accuracy. Answer: 3.9 4.982 Shelf Lives of Batteries Produced by One Major Conpany
(1 point) Length of skateboards in a skateshop are normally distributed with a mean of 31.9 in and a standard deviation of 0.4 in. The figure below shows the distribution of the length of skateboards in a skateshop. Calculate the shaded area under the curve. Express your answer in decimal form with three decimal place accuracy. Answer: 31.632 32.7 The Length of Skateboards in a Skateshop
(1 point) Scores on a standardized exam are normally distributed with a mean of 539 and a standard deviation of 99. The figure below shows the distribution of the scores on a standardized exam. Calculate the shaded area under the curve. Express your answer in decimal form with at least two decimal place accuracy Answer 472.67 137 The Scores on a Standardized Exan
Fluorescent lighbulbs have lifetimes that are normally distributed with a mean of 5.1 years and a standard deviation of 1 years. The figure below shows the distribution of lifetimes of fluorescent lightbulbs. Calculate the shaded area under the curve. Express your answer in decimal form with at least two decimal place accuracy. Answer: The numbers on the diagram are 4.43 and 7.1.
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days. About what percent of this product last between 10 days and 13 days? Do not use the empirical rule. Use the graphing calculator, not a table, to find the answer to one decimal place.
7. The average life expectancy of dishwashers produced by a company is 8 years with a standard deviation of 6 months. Assume that the lives of dishwashers are normally distributed. a. What is the probability that a randomly selected dishwasher will have a life expectancy of at least 7 years? b. Dishwashers that fail operating in less than 4 1/2 years will be replaced free of charge. What percent of dishwashers are expected to be replaced free of charge? c....
1. The life time of a certain brand of bulbs produced by a company is normally distributed, with mean 210 hours and standard deviation 56 hours. What is the probability that a bulb picked at random from this company’s products will have a life time of: (i) at least 300 hours, (ii) at most 100 hours, (iii) between 150 and 250 hours.
o a Suppose the lengths of human pregnancies are normally distributed with p = 266 days and 6 = 16 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with u = 266 days and o = 16 days. The area to the right of X = 300 is 0.0168. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and...
Suppose the lengths of human pregnancies are normally distributed with muμequals=266 days and sigmaσequals=16days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with mu equals 266μ=266 days and sigmaσequals=1616 days. The area to the leftleft of Upper X equals 240X=240 is 0.05210.0521. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your...
1) Let x be a continuous random variable that is normally distributed with a mean of 21 and a standard deviation of 7. Find to 4 decimal places the probability that x assumes a value a. between 24 and 30. Probability = b. between 17 and 31. Probability = ------------------------------------------------------------------------------------------------------------------------------------------------------ 2) Let x be a continuous random variable that is normally distributed with a mean of 65 and a standard deviation of 15. Find the probability that x assumes a...