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Suppose we’re running a study to see if Americans’ blood pressure has risen in the last couple of decades.  In adults in 2003, the best estimate for the population’s average systolic blood pressure was 128 mmHg. In our study with n = 57 n = 57 patients, we found a sample mean systolic blood pressure of 137 mmHg. The null hypothesis for our study should be μ = ? \mu = ? .  Enter your answer only as a number (don’t type the “mmHg” part).

Suppose we want to test whether the average time per mile in a running class is less than 10 minutes. What would the alternative hypothesis (not the null hypothesis) be in this situation?

Distributed Database Systems Since a transaction may access data items at several sites, transaction managers at several sites may need to coordinate to implement ______.

Parallel Databases It is possible to speed up the processing of a query by parallelizing the execution of each individual operation, such as sort, select, project, and join. What is this form of parallelism called?

Parallel Databases It is possible to run operations A and B simultaneously on different processors so that B consumes tuples in parallel with A producing them. What is this form of parallelism called?

Parallel Databases Because main memory is so much slower than processors, a significant amount of potential processing speed may be lost while a core waits for data from main memory. These waits are referred to as _________.

Parallel Database Systems In __________, the size of the database increases, and the tasks are large jobs whose runtime depends on the size of the database.

Find the transformation from the uv plane to the xy plane.u = x + 5y, v = x – 5y

Solve the problem.Let D be the smaller cap cut from a solid ball of radius 9 units by a plane 4 units from the center of the sphere. Set up the triple integral for the volume of D in cylindrical coordinates.

Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 8x + 4y + 7; 0 ≤ x ≤ 1, 1 ≤ y ≤ 3