Assume that 200 babies are born to 200 couples treated with the xsort method of gender selection that is claimed to make girls more likely. preliminary results from a test of the xsort method of gender selection involved 200 couples who gave birth to 115 girls and 85 boys. at significance level of 0.1, test whether the proportion of girl births after the treatment is greater than the 50% that occurs without any treatmentanswer the next three questions.a. test statistic =b. p-value =c. what is your decision? a. accept (fail to reject) h0. there is no sufficient evidence in the sample that the proportion of girl births after the treatment is greater than the 50% that occurs without any treatment.b. reject h0. there is sufficient evidence in the sample that the proportion of girl births after the treatment is greater than the 50% that occurs without any treatment.

The ball will reach the same height of 10 meters after 100 meters.

Part A)

100 meters.

Part B)

10 meters.

Step-by-step explanation:

The golf-ball hit by the Seven-Iron is modeled by the equation:

And the ball hit by the Nine-Iron is modeled by the equation:

Where h is the height of the ball after d meters.

When they are at the same height, the two equations will equal each other.

Graphically, this is where the two graphs will intersect.

To solve this using a Ti-84, you can follow these steps (I'm using the Ti-84 Plus Silver Edition):

1) Using [Y=], write and then [GRAPH] the two equations.

2) Press [ZOOM] and [ZOOM OUT] until you can see both graphs clearly.

3) To find the intersection point, press [2ND] and then [CALC] (above [TRACE]).

4) Choose [5) Intersect].

5) Using the arrow keys, click on one graph to choose it as your first curve and the other to choose it as your second curve. (In this case, it doesn't matter which one is which.)

6) When it asks you to guess, put the cursor to as close to the intersection point as possible. Ignore the intersection at the origin point.

7) Press [ENTER], and it should give you your solution.

Therefore, the intersection point (not counting (0,0)) is at (100, 10).

Therefore, the ball will reach the same height of 10 meters after 100 meters.