amounts all student borrowers owe is \$2,750. Determine the probability that a randomly selected student borrow owes between $26,449 and \$31,778 in student loans. Round the solution to four decimal places, if necessary P(\$26,448

The life of a vacuum cleaner is normally disyributed with mean 5 years and standard deviation 2 year. find the probability that it lasts less than 4 years.

According to the latest internet usage survey of college students, the amount of time spent on social media per day is normally distributed with a mean equal to 210 minutes  and a standard deviation of 45 minutes.  Based on this survey, find the probability that the amount of time spent on social media by college students is between 150 and 300 minutes per day.  Round answer to 4 decimal places.

Please do not give solution in image format thanku Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 129000 dollars. Assume the standard deviation is 30000 dollars. Suppose you take a simple random sample of 53 graduates.   Find the probability that a single randomly selected policy has a mean value between 141362.5 and 143834.9 dollars. P(141362.5 < X < 143834.9) = (Enter your answers as numbers accurate to 4 decimal places.)   Find the probability that a random sample of size n = 53 has a mean value between 141362.5 and 143834.9 dollars. P(141362.5 < M < 143834.9) = (Enter your answers as numbers accurate to 4 decimal places.)