1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ikadub [295]
3 years ago
13

Trevor thinks that left-handed pitchers in a baseball league are more likely to strike out batters than right-handed pitchers ar

e. He's considering each "at-bat" as an opportunity for a strikeout. He takes a random sample of at-bats where the pitcher was left-handed, and he records the proportion of those at-bats that result in a strikeout. He repeats this process for at-bats with right-handed pitchers. He wants to use the results to test if the proportion of at-bats resulting in a strikeout is significantly higher for left-handed pitchers. Which of the following is an appropriate set of hypotheses for Trevor'?
A. H0: PR - PL = 0
Ha: PR - PL > 0
B. H0: PL - PR = 0
Ha: PL - PR < 0
C. H0: PM - PR = 0
Ha: PL - PR > 0
D. H0: PR - PL = 0
Ha: PR - PL not equal to 0
Mathematics
1 answer:
Scilla [17]3 years ago
8 0

Answer:

C. H0: PL - PR = 0

Ha: PL - PR > 0

The null hypothesis for this case is that left-handed pitchers in a baseball league are not more likely to strike out batters than right-handed pitchers are. That is the proportion of at-bats resulting in a strikeout is significantly equal for both left-handed and right-handed pitchers.

H0: PL - PR = 0

The alternative hypothesis is that the proportion of at-bats resulting in a strikeout is significantly higher for left-handed pitchers

Ha: PL - PR > 0

PL - proportion of at-bats resulting in a strikeout for left-handed pitchers

PR - proportion of at-bats resulting in a strikeout for right-handed pitchers

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

The null hypothesis for this case is that left-handed pitchers in a baseball league are not more likely to strike out batters than right-handed pitchers are. That is the proportion of at-bats resulting in a strikeout is significantly equal for both left-handed and right-handed pitchers.

H0: PL - PR = 0

The alternative hypothesis is that the proportion of at-bats resulting in a strikeout is significantly higher for left-handed pitchers

Ha: PL - PR > 0

PL - proportion of at-bats resulting in a strikeout for left-handed pitchers

PR - proportion of at-bats resulting in a strikeout for right-handed pitchers

You might be interested in
Alicia bikes 25% of a 100-mi trip on the first day. she bikes of the remaining distance on the second day. on the third day, she
DochEvi [55]
First day: 25% × 100 = 25 ( miles)
Second day : the remaining distance is 100 - 25 = 75 ( milesl
Third day: 40% × 75 = 30
25 + 75 + 30 = 130 (miles)

5 0
3 years ago
HURRY i’ll give brainliest please help!
Tema [17]
I think it is Good deeds
4 0
3 years ago
Need help ASAP<br> find the mean,median, range and IQR<br> brainliest
N76 [4]
The mean= 5.5

The median= 6

The range= 10

The IQR= 5

I really hope this helps:)
4 0
3 years ago
Read 2 more answers
I NEED HELP!! pleaseee
Veronika [31]

Answer:

<h3>y = 20</h3><h3 />

Step-by-step explanation:

line RPN = 180 = 4y - 10 + 90 + y

180 - 90 + 10= 5y

100 = 5y

y = 100/5

y = 20

4 0
2 years ago
Find the value of -1 -6.​
s344n2d4d5 [400]

Answer:

-7

Step-by-step explanation:

-1-6 is like 1+6 but with a negative sign before it.

6 0
3 years ago
Read 2 more answers
Other questions:
  • In the expression 90 5z,the coefficient term is
    9·1 answer
  • the sum of three consecutive even numbers is 42. The sum can be represented by the equation n+(n+2)+(n+4)=42. what does n repres
    9·1 answer
  • What do you call a fraction in which the only common factor of the numerator and denominator is 1? A) complex form B) compound f
    12·1 answer
  • Arthur earn $136 in three weeks he goes back to school in one he needs at least $189 in a new coat that he wants for school how
    6·2 answers
  • PLEASE HELP URGENT!!! 90 POINTS
    13·1 answer
  • Identify an equation in slope Intercept form for the line parallel to y= -3x+7 that passes through (2,-4)
    8·1 answer
  • What is a expression that equals 3/8? Like a written out expression?​
    13·1 answer
  • It takes 1 minute to bake 6 cookies how many cookies could you bake in 2 minutes
    14·1 answer
  • Confused on which one
    13·1 answer
  • Determine the solution to a−5=3 that makes the equation true.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!