The bacteria Escherichi coli are commonly found in the bladder of human beings. Suppose that 3000 of the bacteria are present
at time t = 0. Then 1 minutes later, the number of bacteria
present will be N(t) = 3000(2).
a) How many bacteria will be present after 10 minutes?
30 minutes?
b) How many bacteria will be present after 2 hrs
c) When will 1,000,000 bacteria be present?

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.