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In a trip to Asia a traveler spent $90 a day for hotels in Bangkok, $60 a day in Singapore and $60 a day in Kuala Lumpur. For food the traveler spent $60 a day in Bangkok, $90 a day in Singapore, and $60 a day in Kuala Lumpur. In addition the traveler spent $30 a day in other expenses in each city. The traveler's diary shows that the total hotel bill was $1020, total food bill was $960, and total other expenses were $420. Find the number of days the traveler spent in each city, or show that the diary must be wrong
From the given probability distribution finite the mean and standard deviation.
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assume the distribution of heights among all 15 year old boys is normally distributed with mean 67 and standard
A random sample of 64 light bulbs indicates a sample mean life of 350 hours. Construct a 95% confidence interval estimate of the population mean life of the light bulbs.
Suppose that you select a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
in how many ways can 12 indistinguishable muffins and 1 cookie be distributed among three children in such a way that
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Does the regression equation account for a significant portion of the variance in GPA? Use ∝ = .05 to evaluate the F - ratio.
1.an experiment compares yields for six different types of alfalfa. each type was planted in four different plots. the
an independent-measures research study uses two samples each with n 12 participants. if the data produce a t statistic
How do we go about interpreting the results of various types of statistical tests in health care research?
Using this test 80% of Down's syndrome cases can be identified at birth, while 5% of normals are detected as positive. a. What is the sensitivity and specificity of the test?
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