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Technology and the Internet Intel and Test Devices recently began shipping a smart baby body suit called Mimo.39 This baby onesie has an Internet connection that allows parents to monitor an infant at all times. A random sample of infants (less than 1 year old) was obtained, and each was fitted with a Mimo. The suit was used to monitor sleeping respiratory rates (breaths per minute), and each child was classified by position: on the back or on the stomach. The data are given in the following table.
Is there any evidence to suggest that the respiratory rates are different for these two sleeping positions? Assume that the underlying distributions are continuous and use a Wilcoxon rank-sum test with a = 0.01.
A survey of 51 randomly selected students finds that on average students study 138 minutes per night with a standard deviation of 32 minutes. What conclusion can be made from this data?
a random sample of 81 students at a local university showed that they work an average of 60 hours per month with a
a machine produces ball bearings is set so that the average diameter is .50 inch. a sample of 10 ball bearings was
Discover Card would like to set α = 0.05. Define Population 1 as Dallas and Population 2 as Houston and use the critical value approach to test this hypothesis.
Construct and interpret the box-and-whisker plot for the data.- Standardize the data, then determine the mean and standard deviation of the standardized values.
Customers arrive to the company at a rate, on average, of one per hour with a Poisson distribution. The company is staffed by a single individual(the owner) who takes on average 30 minutes with each customer with a standard deviation of 15 minute..
a data set consists of 247 test scores. over a long period it has been found that the mean and standard deviation for
(a) Construct a histogram for the data and describe its properties. (b) Construct a runs chart for the data. (c) Write a brief summary of the two data displays contrasting the infor mation gained by each plot.
Produce a regression equation to predict the PP100 for vehicles in the model y1 = ß0 + ß1x1 + ß2x2 + e.
For problem, construct a 95% confidence interval for the difference between average catch in the two locations.
Determine the unbiased point estimates of the mean and the standard deviation for the above sample. [Round your answer to two decimal places.]
The winch cable on a tow truck is subjected to a force of when the cable is directed at. Determine the magnitudes of the total brake frictional force F for the rear set of wheels B and the total normal forces at both front wheels A and both rear w..
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