Statistics

posted by .

On the daily run of an express bus, the average number of passengers is 48. The standard deviation is 3. Assume the variable is normally distributed. Find the probability that the bus will have

Between 36 and 40 passengers

  • Statistics -

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z scores.

  • Statistics -

    ette

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    In response to the increasing weight of airline passengers, the Federal Aviation Administration in 2003 told airlines to assume that passengers average 190 pounds in the summer, including clothing and carry-on baggage. But passengers …
  2. Statistics

    The average age of chemical engineers is 37 years with a standard deviation of 4 years. If an engineering firm employs 25 chemical engineers, find the probability that the average age of the group is greater than 38.2 years old. If …
  3. Statistics

    find the 90% confidence interval for the variance and standard deviation of a sample of 16 and a standard deviation of 2.1 Assume the variable is normally distributed.
  4. statistics

    the average number of gallons of lemonade consumed by the football team during a game is 20, with a standard deviation of 3 gallons. assume the variable is normally distributed. when a game is played, find the probability of using …
  5. statistics

    on the daily run of an express bus, the average number of passengers is 48. the standard deviation is 3. Assume the variable is normally distributed. find the probability that the bus will have. a) between 36 and 40 passengers b) fewer …
  6. Statistics

    During September, the average temperature of Laurel Lake is 64.2º and the standard deviation is 3.2º. Assume the variable is normally distributed. For a randomly selected day, find the probability that the temperature will be a. …
  7. statistics

    A study found that citizens spend on average $1950 per year on groceries with a standard deviation of $100. Assume that the variable is normally distributed. 5. Identify the population mean. 6. Identify the population standard deviation. …
  8. Statistics

    During September, the average temp of laurel lake is 64.2 degrees. the standard deviation is 3.2 degrees. Assume the variable is normally distributed. For the randomly selected day, find the probability that the temp will be a. above …
  9. statistics

    Suppose the average body temp is 98.6 assume the variable is normally distributed with a standard deviation of .74 degrees. suppose a sample of 100 is taken. what is the probability that the mean is below 98.4?
  10. Math

    The average amount customers at a certain grocery store spend yearly is $784.39. Assume the variable is normally distributed. If the standard deviation is $76.15, find the probability that a randomly selected customer spends between …

More Similar Questions