Answer:
5 for this is important news have a hard have job he
Answer:
The null hypothesis is 
The alternate hypothesis is 
Step-by-step explanation:
The diameter of a spindle in a small motor is supposed to be 4.1 millimeters
This means that the null hypothesis is that the diameter has the supposed value, that is, 
If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 41 spindles to determine whether the mean diameter has moved away from the required measurement.
Tests if it has moved away, that is, if the mean is different from the specified value of 4.1. So the alternate hypothesis is 
Answer:
2.52
Step-by-step explanation:
An automobile manufacturer claims that its van has a 27.6 miles/gallon (MPG)
So, 
n = 210 vans
x = 28

Formula of test statistic = 


Hence the value of the test statistic is 2.52
Answer:
the line is y=2x+7
Step-by-step explanation:
Answer:
Required equation : 
Weight of each of his checked bags = 15.5 kg
Step-by-step explanation:
Number of checked bags = 2
Backpack weight = 4 kg
The total weight of Carl's baggage = 35kg
Let w is the weight of each checked bag.
Weight of 2 checked bags = 2w
Weight of 2 checked bags + Backpack weight = Total weight of Carl's baggage

Subtract 4 from both sides.

Divide 2 from both sides.

Therefore, the weight of each of his checked bags is 15.5 kg.