The germination rate of seeds is defined as the proportion of seeds that, when properly planted and watered, sprout and grow. A certain variety of grass seed usually has a germination rate of 0.80, and a company wants to see if spraying the seeds with a chemical that is known to change germination rates in other species will change the germination rate of this grass species. (a) Suppose the company plans to spray a random sample of 400 seeds and conduct a two-sided test of 0: 0.8Hpusing = 0.05. They determine that the power of this test against the alternative 0.75pis 0.69. Interpret the power of this test. (b) Describe two ways the company can increase the power of the test. What is a disadvantage of each of these ways? (c) The company researchers spray 400 seeds with the chemical and 307 of the seeds germinate. This produces a 95% confidence interval for the proportion of seeds that germinate of (0.726, 0.809). Use this confidence interval to determine whether the test described in part (a) would reject or fail to reject the null hypothesis. Explain your reasoning.
The germination rate of seeds is defined as the proportion of seeds that, when properly planted and watered, sprout and grow. A certain variety of grass seed usually has a germination rate of 0.80, and a company wants to see if spraying the seeds with a chemical that is known to change germination rates in other species will change the germination rate of this grass species. (a) Suppose the company plans to spray a random sample of 400 seeds and conduct a two-sided test of 0: 0.8Hpusing = 0.05. They determine that the power of this test against the alternative 0.75pis 0.69. Interpret the power of this test. (b) Describe two ways the company can increase the power of the test. What is a disadvantage of each of these ways? (c) The company researchers spray 400 seeds with the chemical and 307 of the seeds germinate. This produces a 95% confidence interval for the proportion of seeds that germinate of (0.726, 0.809). Use this confidence interval to determine whether the test described in part (a) would reject or fail to reject the null hypothesis. Explain your reasoning.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
100%
The germination rate of seeds is defined as the proportion of seeds that, when properly planted and watered, sprout and grow. A certain variety of grass seed usually has a germination rate of 0.80, and a company wants to see if spraying the seeds with a chemical that is known to change germination rates in other species will change the germination rate of this grass species.
(a) Suppose the company plans to spray a random sample of 400 seeds and conduct a two-sided test of 0: 0.8Hpusing = 0.05. They determine that the power of this test against the alternative 0.75pis 0.69. Interpret the power of this test.
(b) Describe two ways the company can increase the power of the test. What is a disadvantage of each of these ways?
(c) The company researchers spray 400 seeds with the chemical and 307 of the seeds germinate. This produces a 95% confidence interval for the proportion of seeds that germinate of (0.726, 0.809). Use this confidence interval to determine whether the test described in part (a) would reject or fail to reject the null hypothesis. Explain your reasoning.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
Expert Answers to Latest Homework Questions
Q: Help with the following question, please write the answer on piece of paper
Q: Answer both questions
Q: Need help with problem
Q: Given the following, Construct the load, shear, and moment diagram. please solve it using the…
Q: Given the following, Construct the load, shear, and moment diagram. please solve it using the…
Q: The figure below shows the graph of intensity as a function of angular position for a double-slit…
Q: Scenario:
You work in the operations department at NationaliTeas, a large international corporation…
Q: Question: Consider how businesses can influence their customers to consider ethical approaches to…
Q: Need help with this question. Please explain each step and neatly type up. Thank you :)
Q: The structures of tissues are often related to their functions.
1. Why vagina made up of…
Q: Using formulas, no tables
correct answers:
i) i1=7.3746% pa
*2=8.981% pa
i3=6.4562% pa
ii)…
Q: Solve it using formulas, no tables
correct answers:
i) i^2 0.059126 > 0.0341
iii) P(wd) £73.34 per…
Q: Solve it Using formulas, no tables
Correct answers:
i) NPV(7%)= PV(l) + PV(s) - PV(c) = 48.15757 +…
Q: Solve it using formulas, no tables
correct answer: NPV(9%) = 37.75103 - 28.53393 = 4.217107
A…
Q: Solve it using formulas, no tables
correct answers are:
ii) on 01/07/2019 --> -£17,250
On 01/01/2020…
Q: Solve it using formulas, no tables
correct answers are:
i) i1=0.08225 pa
i2=0.08362 pa
i3=0.10067 pa…
Q: Solve it using formulas, no tables
correct answers are:
ii) NPV(11%)= 3.6912
NPV(12%)=-1.0684…
Q: Solve it using formulas, no tables
correct answers are:
i) i^2=0.063977 > 0.0536
iii) Po= £91,630.9…
Q: The displacement x of a system satisfies
3x+8x+5x= 43 + 2y — 7y
= 4 cos 3t. If x = 0 = x at t = 0,…
Q: Suppose that the gravitational force is not give by the inverse-square law, and instead
is
F
grav
=…
Q: 9
Supose
S₁₁ h ( x ) d
x
= S₁ f ( x ) dx = −1. f f (x)dx
dx = 5, an
= 4. Evaluate the following…