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As part of a screening project, the systolic blood pressure of a sample of 100 nursing students was taken. Assume that the population of blood pressures from which the sample was drawn is normally distributed with mean 120 mmHg and standard deviation 20 mmHg. The mean systolic blood pressure for the sample was 126 mmHg. How likely is it that the results of this sample occurred?
Provide a discussion that supports the assumption that the variance of savings increases with family income.
On opening day one season, 10 major league baseball games were played and they lasted the following numbers of minutes. Find the sample variance.
sketch a histogram showing the population distribution - locate value of the population mean in your sketch and make an estimate of the standard deviation.
If you arbitrarily grab 2 socks out of drawer determine the probability that you grab a matching pair?
For binomial distribution among given values for n as well as p state whereas or not it is suitable to use normal distribution as an approximation.
If the confidence interval limits do not include age below 20 does it mean that motor cyclists under the age of 20 rarely die in crashes?
Perform the sensitivity analysis for the COM-TECH case. Assume you are interested in following two probabilities: probability of receiving grant, and probability of high cellular R&D costs.
In a test of a gender-selection method, 14 babies are born and 10 of them are girls. Find the number of different possible sequences of genders that are possible when 14 babies are born
While in July the mean high temperature is 74oF and the standard deviation is 8oF. In which month is it more unusual to have a day with a high temperature of 55oF?
Let's say I have a new drug that I think helps diabetics. So I perform clinical trials in accordance with the FDA requirements. I give one randomly selected groups of diabetics the drug, and another sample gets a placebo pill.
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
To begin with, I have an example problem that asks to find a complete solution for: y'+ 2xy = x. The text says to multiply both sides by e^int a(x) dx
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