Answer:
Does this sample provide convincing evidence that the machine is working properly?
Yes.
Step-by-step explanation:
<u>Normal distribution test:</u>
Where,
Once the significance level was not given, It is usually taken an assumption of a 5% significance level.
Taking the significance level of 5%, which means a confidence level of 95%, we have a z-value of
Therefore, we <u>fail to reject the null</u>. It means that the hypothesis test is not statistically significant: the average length is not different from 1.5!
In order to calculate that, you have to divide 6 from 13
It would be: 13/6 = 2.167
In short, Your Answer would be 2.167
Hope this helps!
W = 21 - 3
weight of the tree = 21 pounds - 3 pounds
The solution set is
Explanation:
The given equation is
To determine the solution set of the equation, let us solve the equation.
Adding both sides of the equation by 3, we have,
Taking square root on both sides of the equation, we get,
Thus, the solution of the equation is
The solution set of the equation is the set which contains all the solutions of the equations.
Thus, writing the solutions of the equation using set notation, we have,
Thus, the solution set is