The life span of a laptop battery is normally distributed with a mean of 32 months and a standard deviation of 7 months. What is the probability that a randomly selected battery will last longer than 36 months? Round your answer to four decimal places. What is the probability that a randomly selected battery will last less than 20 months? Round your answer to four decimal places.

Q: Suppose a probability and statistics class took an exam that had a mean of 60 and a standard…

A: Given, E(X)=60 SD(X)=12   After 10 Point curve Let Y be new variable.

Q: The average life of a brand of automobile tires is 30,000 miles, with standard deviation of 2,000…

A: Mean = 30000 Standard deviation = 2000

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.2…

A:

Q: The amount that people pay for their cellphone service is normally distributed with a mean of $136…

A:

Q: Find the probability that a randomly selected year of rain in Sydney, Australia has a yearly…

A: Given Population mean μ=137, population standard deviations σ=69, Let X be the rain in Sydney Note:…

Q: Proctor & Gamble reported that an American family of four washes an average of 1 ton (2000…

A: Introduction:Here, the suggested population mean, μ = 2,000 pounds.The population standard…

Q: Temperatures a city are distributed approximately normal, with a mean of 61 degrees fahrenheit and a…

A: Given data,Mean μ=61sd    σ=6P(X<70.5)=?

Q: Suppose you pay $500 per year to insure your car worth $10,000. The probability that you get in an…

A:

Q: A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed,…

A: Mean(µ) = 35000 Standard deviations (σ) = 2100 X ~ N (µ, σ )= N ( 35000, 2100)