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What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):
57.4 56.5 52.8 65.5 59.0 64.7 70.1 64.7 53.5 78.2
Assume that the population of x values has an approximately normal distribution.(a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to one decimal place.)
x = ______%
s = ______%
(b) Find a 90% confidence interval for the population average μ of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.)lower limit _____ %
upper limit _______ %
However one of the children fails to solve the peoblems, so the researcher has an undetermined score. what is the best measure of central tendency for these data?
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
Assuming this rate continues, what is the probability that there will be no more than one crash in the next 50,000 flying hours?
a trucking firm delivers appliances for a large retail operation. the packages or crates have a mean weight of 291 lb.
a skateboarder have a 96 success to do an ollie in his first try. he is given 3 tries to do an ollie. each try is
What is the purpose of sampling? What are some concerns and dangers of sampling? How important is the sample design to data validity? Explain.
a if fx is the probability density function pdf of a continuous random variable xwhat two conditions must be satised ?b
What type of data would you obtain from a rating scale? Prove an application/example in your response of how this instrument could be used. For what population would you use a graphical rating scale?
the manager of a paint supply store wants to determine whether the mean amount of paint contained in 1-gallon cans
you will submit one word document for this assignment. you will create this word document by cutting and pasting spss
1. discuss the fundamental properties of a binomial probability distribution and their application to finding
Radioactive decay. An experiment was conducted using a Geiger-Mueller tube in a physics lab. Geiger-Mueller tubes respond to gamma rays and to beta particles (electrons). A pulse that corresponds to each detection of a decay product is produced, a..
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