Top answers

Minnie and Helen are playing in the same hockey match. The probability of Minnie scoring a goal is 0.3. The probability of Helen scoring a goal is 0.4. What is the probability of both Minnie and Helen scoring a goal.

The probability of two events happening is equal to the probability of event 1 times the probability of event 2. Therefore, the probability of both Minnie and Helen scoring a goal is equal to the probability...
MA
Answered by Minnie A. • Maths tutor
3357 Views

Why does iodine have a higher boiling point than chlorine?

Neither iodine or chlorine have permanent dipoles because there is no difference in electronegativity between the atoms, so there are no permanent dipole : permanent dipole interactions. There are also no hy...
EE
Answered by Ellie E. • Chemistry tutor
10991 Views

A curve has the equation y=3x^2-2x+7, find the gradient of the line at the point (6,3)

dy/dx = 34
BC
Answered by Ben C. • Maths tutor
5631 Views

What should I do if I get an exam question which I don't have any quotes for?

Firstly, it is important to try to reduce the risk of this happening beforehand by learning as many quotations as possible. A good way to look at it is that no quote you learn will be unhelpful, and every qu...
FM
5775 Views

What is the difference between internal and external validity?

Internal and external validity both relate to the evaluation of a research's study / procedure' validity. Internal validity refers to whether there is a causal relationship between the independent variable (...
KK
5171 Views