One hundred draws are made at random with replacement from a box of tickets; each ticket has a number written on it. The average of the draws is 29 and the SD of the draws is 40. You see a statistician make the following calculation: z = 29 - 20/4 = 2.25, P ~ 1%
a. She seems to be testing the null hypothesis that the average of the is 20. Options; box, sample.
b. True or false: there is about a 1 % chance for the null hypothesis to be right. Explain briefly.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

cut 138 centimeters off

step-by-step explanation:

250-112 = 138