Consider the setup in Problem 3.2.3 in HW 2. Find  

State the hypotheses. A laptop manufacturer claims that the mean life of battery for a certain model of laptop is more than 20 hours.

The P-value for a hypothesis test is P = 0.008. Do you reject or fail to reject H0 when the level of significance is α = 0.01?

Which knee ligament is most commonly torn?

Consider the setup of Problem 4.4.4 of HW 3. Find

Consider two designs for a delta structure over compressed, immutable base segments in a column store:• Design L (logical Positional Delta Tree (PDT)): delta entries are keyed by logical tuple positions in the table.• Design P (physical Positional Delta Tree (PDT)): delta entries are keyed by physical file offsets within base segments.In a read-mostly data warehouse where base segments are periodically reorganized/recompressed in the background, which characterization of their suitability for reads and writes is most accurate?

 I thought we were supposed to write the answers, but actually we have to read them out.

Match each exponentail expression to its equivalent log form.

Write as a combination of logs; logx3y2z5

A 29-year-old patient with Crohn’s disease is being started on maintenance therapy. Their chart notes a severe sulfa allergy that previously caused swelling and hives. The provider wants to avoid medications that could trigger this reaction. Which medication should not be used in this patient due to their sulfa allergy?