Post a New Question

statistics

posted by .

The caffeine content of a cup of home-brewed coffee is a normally distributed random variable with a mean of 115 mg with a standard deviation of 20 mg.
(a) What is the probability that a randomly chosen cup of home-brewed coffee will have more than 130 mg of caffeine?
(b) Less than 100 mg?
(c) A very strong cup of tea has a caffeine content of 91 mg. What is the probability that a cup of coffee will have less caffeine than a very strong cup of tea?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. intro to statistics

    a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 oz.you can allow the cup to overfill 1 percent of the time. what among should …
  2. Descriptive Statistics

    A vending machine dispenses coffee into a twelve ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.04 ounces. You can allow the cup to overfill 10% of the time. What amount …
  3. statistics

    A vending machine dispenses coffee into a sixteen ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 ounces. You can allow the cup to overfill 10% of the time. What amount …
  4. Statistics

    A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed in to the cup is normally distributed with a standard deviation of .08 ounce. You can allow the cup to overfill 2% of the time. What amount …
  5. Introduction to statistics

    A vending machine dispenses coffee into an eight-ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of .03 ounce. You can allow the cup to OVERFILL 1% of the time. What amount should …
  6. statistics

    A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.05 ounce. You can allow the cup to overfill 4% of the time. What amount …
  7. statistics

    a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 oz.you can allow the cup to overfill 5 percent of the time. what amont should …
  8. statistics

    A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.07 ounce. You can allow the cup to overfill 2% of the time. What amount …
  9. math

    A cup of brewed tea has 54 milligrams less caffeine than a cup of brewed coffee. If a cup of tea has 66 milligrams of caffeine, how much caffeine is in a cup of coffee?
  10. Stats

    Instructions for the Experiment / Data Collection regarding questions 1-4: Collect data regarding the caffeine content in a 16oz cup of coffee. Collect the amount of caffeine in 20 different brands of coffee. 1.Calculate the following …

More Similar Questions

Post a New Question