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The age distribution of students at a community college is given below. Age (years) Number of students (f) Under 21 2196 21-25 2057 26-30 1179 31-35 832 Over 35 223 A student from the community college is selected at random. The events A and B are defined as follows. A = event the student is between 21 and 35 inclusive B = event the student is 26 or over Determine the number of outcomes that comprise the event (A and B). 2234 6302 4291 2011
Let the random variable X denote the number of emergency calls received by the campus police office each day. The probability mass function of X is given by:
If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that sigma^2 is approximately equal to 5.4, how many observations would have to be included in ..
1. a box contains 5 green 6 red 2 yellow and 8 blue marbles. four marbles are drawn from the box at the same time.a
Workers in 2 different mine groups were asked what they considered to be the most important labour-management problem. In Group A,
a randomly selected value from a normal distribution is found to be 2.1 standard deviations above its mean. what is the
mimi just started her tennis class three weeks ago. on average she is able to return 35 of her opponents serves. let
According to studies, 1% of all patients who undergo laser surgery to correct their vision have serious post laser vision problems. In a sample of 95,000 patients, what is the approximate probability that fewer than 960 will experience serious..
Determine the probability that no female are hired. Determine the mean and standard deviation of X.
the manager of a department store wants to determine what proportion of people who enter the store use the stores
If probability of demand for 50 units is .40, probability of demand of 100 units is .50, and probability of demand for 150 units is .10, what lot size would you recommend if the goal is to maximize expected profit?
The average time it took then to change a water pump was 18 minutes. The SD of the sample was 3. Find the 99% of the interval of the true mean.
1.what is a cause-and-effect diagram?a.a diagram that organizes the logical relationships between the inputs and stages
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