If the current is pointing into the page, the direction of the magnetic field will be upwards.
<h3>What is direction of magnetic field?</h3>
The Maxwell right-hand thumb rule is used to indicate the direction of the magnetic field in the direction of the current or charge.
According to this rule, "if the thumb of the right-hand points along the direction of the current, then the remaining curled fingers of the same hand give the magnetic field direction due to the current".
Thus, when the current is pointing into the page, the direction of the magnetic field will be upwards.
Total call including 6500 'yes' and 4100 'no' are 10600 and on each call there was a fifty cent charge. Total charge becomes 5300 $ so this is very straight forward data. And from this test two types of classes are made with cleared population in each class and such cleared population division is example of stratified sampling so this is right answer.