Math Answers

a researcher reports that the average salary of a teacher php 27000 a sample of 32 teachers has a mean of php 29500 at a=0.01 test the claim that the co teachers earn more than php 27000 a months the standard deviation of the population is php 2 250

Which of the following is a parameter in the situation “A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?

A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?

A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?

Shown below are ages (𝑥) and the systolic blood pressures (𝑦) of 9 patients in a certain hospital. Find the regression equation.

Age (𝑥) 26 40 35 50 45 55 28 30 52

Blood pressure (𝑦) 110 140 120 145 130 150 150 125 142

The table below shows the time in hours (𝑥) spent by six (6) students in playing

Clash of Clansand the scores of these students got on a math test. Solve for

Pearson Product Correlation Coeffcient. Construct a Scatter Plot.

𝑥 1 2 3 4 5 6

𝑦 30 25 25 10 15 5

State if the following statement is true or false. Give reasons for your answers in the form of a short proof or a counterexample.

(√2, 1, ½) E Q X Z X R.

State is the following statement is true or false. Give reasons for your answers in the form of a short proof or a counterexample.

The domain of the function f defined by f(x)= √(3-x)/(x-2) is R-{2}.

If f(x)= 2|x-1| and g(x)=3x-10, then fog(1)=12

Write z1=(√3+i) and z2=(1−i) in trigonometric form. Then the argument of the quotient (z1)/(z2)is given by