subject
Mathematics, 23.04.2021 19:20 barbar12345

The average speed of a baseball line drive is 83 miles per hour. Josiah a practiced a new technique to improve his hitting speed. His coach recorded
the speed of 42 random hits during practice and found that his average speed
using the new technique was 84.2 miles per hour, with a standard deviation of
4.7 miles per hour.
Part A: State the correct hypotheses Josiah is trying to prove the new
technique is an improvement over the old technique. (4 points)
Part B: Identify the correct test and check the appropriate conditions. (6
points)
I have the answer to part A i just have no idea how to check my conditions... PLEASE HELP!!!

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 20:00
Guys i need ! graded assignment grade 8 checkpoint 2, part 2 answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit. total score: of 9 points (score for question 1: of 4 points) 1. the cost of renting a car for a day is $0.50 per mile plus a $15 flat fee. (a) write an equation to represent this relationship. let x be the number of miles driven and y be the total cost for the day. (b) what does the graph of this equation form on a coordinate plane? explain. (c) what is the slope and the y-intercept of the graph of the relationship? explain.
Answers: 1
question
Mathematics, 21.06.2019 20:00
Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7
Answers: 3
question
Mathematics, 21.06.2019 21:00
The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?
Answers: 2
question
Mathematics, 22.06.2019 00:00
At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.
Answers: 1
You know the right answer?
The average speed of a baseball line drive is 83 miles per hour. Josiah a practiced a new techniqu...
Questions
question
Mathematics, 06.11.2021 06:40
question
Mathematics, 06.11.2021 06:40
question
Mathematics, 06.11.2021 06:40