Amanufacturer knows that their items have a normally distributed lifespan, with a mean if 9.1 years, and standard deviation of 2.9 years. if you randomly purchase one item, what is the probability it will last longer than 10 years?
No commitments. Cancel anytime. All pricing is in US dollars (USD). The subscriptoin renews automaticaly until you cancel. For more information read our Terms of use & Privacy Policy