Post a New Question

statistics

posted by .

The amount that airlines speed on food per passenger is normally distributed with means $8.00 and standard deviation $2.00. What is the probability that a randomly selected airline spends more than $12.50?

  • 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/probability related to the Z score.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Statistics

    The mean amount spent by a family on food per month is $500 with a standard deviation of $75. Assuming that the food costs are normally distributed, what is the probability that a family spends more than $410 per month?
  2. statistics

    1. The on-campus housing costs for a semester at a state university are Normally distributed with a mean of $1553 and a standard deviation of $329. (a) What is the distribution of the mean on-campus housing cost for a semester at this …
  3. math

    The mean amount spent by a family of four on food per month is $550 with a standard deviation of $85. Assuming that the food costs are normally distributed, what is the probability that a family spends less than $410 per month?
  4. stats

    The amount that airlines speed on food per passenger is normally distributed with means $8.00 and standard deviation $2.00. What is the probability that a randomly selected airline spends more than $12.50?
  5. statistics

    Scores on a visual perception test are normally distributed with a mean of 2020 and a standard deviation of 250. a)If one subject is randomly selected and tested, find the probability of a score greater than 1800 b)if 50 subjects are …
  6. stats.

    The amount that airlines spend on food per passenger is normally distributed with mean $8.00 and standard deviation $2.00. What is the probability that a randomly selected airline spends more than $12.50.
  7. 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 …
  8. math

    Test scores on a university admissions test are normally distributed, with a mean of 500 and a standard deviation of 100. a. What is the probability that a randomly selected applicant scores between 425 and 575?
  9. Math- Prob Stat

    The amount of time a student spends completing homework per week their senior year is normally distributed with a mean of 5 hours and a standard deviation of 1.4 A. Find the probability a randomly selected student spends less than …
  10. Statistics

    The amount of time the university professors devote to their jobs per week is normally dis- tributed with a mean of 52 hours and a standard deviation of 8 hours. (a) What is the probability that a professor works for more than 56 hours …

More Similar Questions

Post a New Question