1. We are testing a new drug with potentially dangerous side effects to see if it is significantly better than the drug currently in use. If it is found to be more effective, it will be prescribed to millions of people. a. What does it mean in context to make a type I error in this situation

New drug is considered to better effective in terms of side effects) - than old drug ; when actually there is no difference between effectiveness of both drugs in terms of side effects

Step-by-step explanation:

This drug efficiency can be checked by Hypothesis Testing. Null Hypothesis is a hypothesis is a neutral hypothesis, signifying no difference & / or no relationship between the variables. Alternate Hypothesis is hypothesis stating difference or relationship between two variables.

Testing new drug with potentially dangerous side effects to see if it is significantly better than the drug currently in use :-

If it is found to be more effective implies that , the null hypothesis is rejected.

Type one error is rejecting a null hypothesis which is actually true. In this case, it implies that :- New drug is considered to better effective in terms of side effects - than old drug ; when actually there is no difference between effectiveness of both drugs in terms of side effects

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".