The mean weight of pills coming off a drug company's manufacturing line is supposed to be 3.7 grams. If a quality control engineer wants to test that the manufacturing line is working property, what null and altemative hypotheses should the engineer use? \( \begin{array}{ll}\mathrm{H}_{0}: \mu=3.7 & \mathrm{H}_{\mathrm{a}}: \mu \geq 3.7 \\ \mathrm{H}_{0}: \mu \neq 3.7 & \mathrm{H}_{\mathrm{a}}: \mu<3.7 \\ \mathrm{H}_{0}: \mu \neq 3.7 & \mathrm{H}_{\mathrm{a}}: \mu=3.7 \\ \mathrm{H}_{0}: \mu \geq 3.7 & \mathrm{H}_{\mathrm{a}}: \mu=3.7 \\ \mathrm{H}_{0}: \mu=3.7 & \mathrm{H}_{\mathrm{a}}: \mu>3.7 \\ \mathrm{H}_{0}: \mu<3.7 & \mathrm{H}_{\mathrm{a}}: \mu-3.7 \\ \mathrm{H}_{0}: \mu=3.7 & \mathrm{H}_{\mathrm{a}}: \mu \neq 3.7 \\ \mathrm{H}_{\mathrm{a}}: \mu=3.7 & \mathrm{H}_{\mathrm{a}}: \mu<3.7\end{array} \)

Nance Layla Maizonet \#1 Which of the following correlation coefficients indicates the strongest relationship between two variables? a. -0.535 b. -0.534 c. 0.418 d. -0.816 \#2 A survey was taken comparing the number of hours per week students spent studying and their performance on an exam. If a linear regression was performed and the correlation coefficient was 0.017 , what can be said about these results?

\#3 A set of data has correlation coefficient \( r \). For which value of \( r \) would the average magnitude of the residuals be the largest? a. \( r=-0.516 \) b. \( r=-0.445 \) c. \( r=0.875 \) d. \( r=0.158 \)

For the given data: 22; \( 9 ; 19 ; 2 ; 38 ; 40 ; 7 ; 38 ; 44 ; 6 ; 12 ; 10 ; 20 ; 31 ; 48 ; 45 \) Determine the Quartiles, Q1, Q2 and Q3 of the data: Q1: Q2:

Write down the upper and lower quartiles. Upper Quartile = Lower Quartile = Question 3

In a class, there are 750 learners in 1st year, 420 learners in 2 nd year. Draw a pie graph to represent the numbers of learners in these groups.