A researcher is interested in the cumulative grade point average (CGPA) of students who enrolled in a Statistics course this semester. There are three groups, namely A, B and C which consist of 30 students for group A, 40 students for Group B and 30 students for group C. A sample of 50 students are randomly selected in this study. i) State the population and sampling frame. ii) State the variable of interest. iii) Give the appropriate sampling technique to be used for this study. iv) Calculate the number of students that should be selected from each group. v) Suggest the data collection method for this study. Give ONE advantage and ONE disadvantage.

The product of the ages, in years, of three (3) teenagers os 4590. None of the have the sane age. What are the ages of the teenagers???

Use the row of numbers shown below to generate 12 random numbers between 01 and 99
78038 18022 84755 23146 12720 70910 49732 79606
Starting at the beginning of the row, what are the first 12 numbers between 01 and 99 in the sample?

How many different 10 letter words (real or imaginary) can be formed from the following letters
H,T,G,B,X,X,T,L,N,J.

Is every straight line the graph of a function?

For the 1s orbital of the Hydrogen atom, the radial wave function is given as: $R(r)=\frac{1}{\sqrt{\mathrm{\pi <!--\; \pi \; -->}}}(\frac{1}{a_O}{)}^{\frac{3}{2}}{e}^{\frac{-<!--\; -\; -->r}{a_O}}$ (Where $a_O=0.529$ ∘A)
The ratio of radial probability density of finding an electron at $r=a_O$ to the radial probability density of finding an electron at the nucleus is given as ($x.e^{-<!--\; -\; -->y}$). Calculate the value of (x+y).

Find the sets $A$ and $B$ if $\frac{A}{B}=\left(1,5,7,8\right),\frac{B}{A}=\left(2,10\right)$ and $A\cap B=\left(3,6,9\right)$. Are they unique?

What are the characteristics of a good hypothesis?

If x is 60% of y, find $\frac{x}{y-<!--\; -\; -->x}$.
A)$\frac{1}{2}$
B)$\frac{3}{2}$
C)$\frac{7}{2}$
D)$\frac{5}{2}$

The numbers of significant figures in $9.1\times <!--\; \times \; -->{10}^{-<!--\; -\; -->31}kg$ are:
A)Two
B)Three
C)Ten
D)Thirty one

What is positive acceleration?

Is power scalar or vector?

What is the five-step process for hypothesis testing?

How to calculate Type 1 error and Type 2 error probabilities?

How long will it take to drive 450 km if you are driving at a speed of 50 km per hour?
1) 9 Hours
2) 3.5 Hours
3) 6 Hours
4) 12.5 Hours

What is the square root of 106?