Exam

Degrees: Pharmacy and Biotechnology Date: Jan 18, 2021 Question 1 A drug is administered intravenously at a speed of 15 mg/hour. At the same time, the body methabolizes the drug at a rate of 80% of the amount in the body per hour.

Degrees: Pharmacy, Biotechnology Date: January 18, 2021 Question 1 The table below contains the differences between the grades in the final school exam and the entrance exam in a sample of public high schools ($X$) and private high schools ($Y$):

Degrees: Pharmacy, Biotechnology Date: November 23, 2020 Question 1 A test to detect the COVID19 was applied to 850 persons infected by COVID19 with a positive outcome in 800 of them, and it was also applied to 9150 non-infected persons with a positive outcome in 10% of them.

Degrees: Pharmacy, Biotechnology Date: October 26, 2020 Question 1 The table below shows the daily number of patients hospitalized in a hospital during the month of September. $$ \begin{array}{cr} \mbox{Patients} & \mbox{Frequency} \newline \hline (10,14] & 6 \newline (14,18] & 10 \newline (18,22] & 7 \newline (22,26] & 6 \newline (26,30] & 1 \newline \hline \end{array}$$

Degrees: Physiotherapy Date: June 19, 2020 Descriptive Statistics and Regression Question 1 To see if the confinement due to COVID-19 has influenced the performance of a course, the number of failed subjects of each student in the current course and in the previous year course has been counted, obtaining the table below.

Degrees: Physiotherapy Date: May 25, 2020 Descriptive Statistics and Regression Question 1 In a course there are 150 students, of which 50 are working students and the other 100 non-working students.

Degrees: Pharmacy and Biotechnology Date: Dic 16, 2019 Question 1 A lagoon contaminated with nitrates contains 1000 tons of nitrates dissolved in 6 millions of cubic meters of water. To decontaminate the lagoon, we start to introduce pure water into the lagoon at a rate of 100000 cubic meters per day, and we take out the same amount of contaminated water.

Degrees: Pharmacy, Biotechnology Date: December 16, 2019 Question 1 The table below summarizes the time (in minutes) required to remove anesthesia after a surgery in a sample of 50 patients.

Degrees: Pharmacy, Biotechnology Date: November 18, 2019 Question 1 In a population where the prevalence of a disease is 10% we apply a diagnostic test with a sensitivity 85%. What must be the minimum specificity of the test to diagnose the disease when the outcome of the test is positive?

Degrees: Pharmacy, Biotechnology Date: October 14, 2019 Question 1 It has been measured the systolic blood pressure (in mmHg) in two groups of 100 persons of two populations $A$ and $B$.