Pearson eText Business Statistics: First Course -- Instant Access (Pearson+)
8th Edition
ISBN: 9780136880974
Author: David Levine, David Stephan
Publisher: PEARSON+
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Chapter 1, Problem 1.48CRP
(a)
To determine
To describe: The population of interest.
(b)
To determine
To describe: The sample that was collected.
(c)
To determine
To describe: A parameter of interest.
(d)
To determine
To describe: The statistic used to estimate the parameter in (c).
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Students have asked these similar questions
(a) Test the hypothesis.
Consider the hypothesis test Ho
=
:
against H₁o < 02. Suppose that the sample sizes aren₁ =
7 and n₂
= 13 and that
$²
= 22.4 and $22
= 28.2. Use α = 0.05.
Ho
is not
✓ rejected.
9-9
IV
(b) Find a 95% confidence interval on of 102. Round your answer to two decimal places (e.g. 98.76).
Let us suppose we have some article reported on a study of potential sources of injury to equine veterinarians conducted at a
university veterinary hospital. Forces on the hand were measured for several common activities that veterinarians engage in when
examining or treating horses. We will consider the forces on the hands for two tasks, lifting and using ultrasound. Assume that both
sample sizes are 6, the sample mean force for lifting was 6.2 pounds with standard deviation 1.5 pounds, and the sample mean force
for using ultrasound was 6.4 pounds with standard deviation 0.3 pounds. Assume that the standard deviations are known.
Suppose that you wanted to detect a true difference in mean force of 0.25 pounds on the hands for these two activities. Under the null
hypothesis, 40 = 0. What level of type II error would you recommend here?
Round your answer to four decimal places (e.g. 98.7654). Use a
= 0.05.
β
= i
What sample size would be required?
Assume the sample sizes are to be equal.…
=
Consider the hypothesis test Ho: μ₁ = μ₂ against H₁ μ₁ μ2. Suppose that sample sizes are n₁ =
15 and n₂ =
15, that x1 = 4.7
and X2 = 7.8 and that s² = 4 and s² = 6.26. Assume that o and that the data are drawn from normal distributions. Use
απ 0.05.
(a) Test the hypothesis and find the P-value.
(b) What is the power of the test in part (a) for a true difference in means of 3?
(c) Assuming equal sample sizes, what sample size should be used to obtain ẞ = 0.05 if the true difference in means is - 2? Assume
that α = 0.05.
(a) The null hypothesis is
98.7654).
rejected. The P-value is 0.0008
(b) The power is 0.94
. Round your answer to four decimal places (e.g.
Round your answer to two decimal places (e.g. 98.76).
(c) n₁ = n2 =
1
. Round your answer to the nearest integer.
Chapter 1 Solutions
Pearson eText Business Statistics: First Course -- Instant Access (Pearson+)
Ch. 1 - Four different beverages are sold at a fast-food...Ch. 1 - U.S. businesses are listed by size: small, medium,...Ch. 1 - Prob. 1.3LBCh. 1 - Prob. 1.4ACCh. 1 - Prob. 1.5ACCh. 1 - Prob. 1.6ACCh. 1 - For each of the following variables, determine...Ch. 1 - Prob. 1.8ACCh. 1 - Prob. 1.9ACCh. 1 - Prob. 1.10AC
Ch. 1 - The director of market research at a large...Ch. 1 - Prob. 1.15ACCh. 1 - Prob. 1.17LBCh. 1 - Fora population of N = 902, verify that by...Ch. 1 - Given a population of N = 93, starting in row 29,...Ch. 1 - Prob. 1.20ACCh. 1 - You want to select a random sample of n = 1 from a...Ch. 1 - Prob. 1.22ACCh. 1 - Prob. 1.23ACCh. 1 - Prob. 1.24ACCh. 1 - Prob. 1.25ACCh. 1 - Prob. 1.26ACCh. 1 - Prob. 1.27ACCh. 1 - Prob. 1.28ACCh. 1 - Prob. 1.29ACCh. 1 - Prob. 1.30ACCh. 1 - Prob. 1.34ACCh. 1 - Prob. 1.35CYUCh. 1 - Prob. 1.36CYUCh. 1 - Prob. 1.37CYUCh. 1 - Prob. 1.38CYUCh. 1 - Prob. 1.39CYUCh. 1 - What is the difference between an interval scaled...Ch. 1 - What is the difference between probability...Ch. 1 - Prob. 1.42CYUCh. 1 - Prob. 1.43CYUCh. 1 - Prob. 1.45CYUCh. 1 - Prob. 1.48CRPCh. 1 - Prob. 1.51CRPCh. 1 - Prob. 1.52CRPCh. 1 - Social media provides an enormous amount of data...
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