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From a class of 20 students, half of whom are seniors, the teacher selects 10 students at random to check for completion of today's paper. If X denotes the number of papers belonging to seniors among those checked, will X have a binomial distributuin?
The Rutter Nursery Company packages pine bark in 50-pond bags. From a long history, the packaging department reports that the distribution is normal. At the end of each day Jeff Rutter
In the sample of 80 students, 9 were found to be overweight. At a= 0.01, is there adequate evidence to reject claim using critical values?
Assign probabilities to the sample points and then find the probability that the first envelope purchased contains less than $100.
The times needed to fall asleep are assumed to follow a normal distribution. The results for the two nights for the ten volunteers are shown below:
Linear correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance level alpha. n = 11, Alpha = 0.01
Can you show me an example of this? I am a nurse, can you show me an example from the health care field to help me to understand this?
Determine the estimated mean of the following frequency distribution. A sample of the amounts paid for parking on Saturday at the Downtown Parking Garage in Toronto was organized into the following frequency distribution.
The life expectancy of computer terminals is normally distributed with a mean of 4 years and a standard deviation of 10 months. What is the probability that a randomly selected terminal will last more than 5 years?
A firm has tendered for two independent contracts. It estimates that it has probability 0.4 of obtaining contract A, and probability 0.1 of obtaining contract B. Find the probability that the firm:
Using t test for significance of slope to determine whether the independent variable is a significant predictor of the dependent variable - Find the sum of the least squares slope and intercept parameter?
The men took an average of 20.5 hours per year of personal time with a standard deviation of 2.75 hours. What is the pooled estimate of the variance? Round to three decimal places.
Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated location on the Los Angeles freeway system?
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