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An article in Knee Surgery, Sports Traumatology, Arthroscopy (2005, Vol. 13, pp. 273-279) "Arthroscopic meniscal repair with an absorbable screw: results and surgical technique" showed that only 25 out of 37 tears (67.6%) located between 3 and 6 mm from the meniscus rim were healed.
a) Calculate a 99% two-sided confidence interval on the proportion of such tears that will heal. Round the answers to 3 decimal places.
b) Calculate a 99% lower confidence bound on the proportion of such tears that will heal. Round the answer to 3 decimal places.
• A student of the author surveyed her friends and found that among 20 males, 4 smoke and among 30 female friends, 6 smoke. Give two reasons why these results should not be used for a hypothesis test of the claim that the proportions of male sm..
Compute the following linear programming problem and describe the special case of a linear programming problem in which.
according to a government study among adults in the 25- to 34-year age group the mean amount spent per year on reading
The time between the arrival of electronic messages at your computer is exponentially distributed with a mean of four hours. What is the probability that you do not receive a message during a two-hour period?
suppose the average cholesterol level of children ages 2-14 is 175 mgdl with a standard deviation 30 mgdl. recently
a population has a mean of 100 and standard deviation of 20. if you select a single score from this population on the
A physician wanted to estimate the mean length of time µ that a patient had to wait to see him after arriving at the office.
A standard deviation of about $9000. Approximately what percentage of household incomes in this state is between $27,000 to $63,000/year? Show all work as to how this is obtained.
You are estimating the cost ($K) of optical sensors based on the power output of the sensor. Using the preliminary calculations from a data set of 8 sensors, determine the equation of the line. (Round your intermediate calculations to 3 decimal pl..
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11.
at a large department store the average number of years of employment for a cashier is 5.7 with a standard deviation
Why do so many of life's events share the same characteristics with Central Limit Theorem? Why are estimations and confidence intervals important?
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