Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Consider a random sample of size 20 from a normal distribution, Xi ~ N(mu, s^2), and suppose that x(bar) = 11 and s^2 = 16.

a) Assuming it is known that s^2 = 4, test Ho: mu > or equal to 12 versus Ha: mu < 12 at the significance level alpha = .01.

b) What is B = P[TII] if in fact mu = 10.5?

c) What sample size is needed for the power of the test to be .9 for the alternative value mu = 10.5?

d) Test the hypothesis of a) assuming s^2 unknown.

e) Test Ho: s^2 < or equal to 9 against Ha: s^2 > 9 with significance level alpha = .01.

f) What sample size is needed for the test of e) to be 90% certain of rejecting Ho when in fact s^2 = 18? What is B = P[TII] in this case?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M944830

Have any Question? 


Related Questions in Statistics and Probability

1 why must researchers ensure that their experimental

1. Why must researchers ensure that their experimental groups are roughly equivalent before manipulating the independent variable? 2. Discuss the relative advantages and disadvantages between within-subjects designs and ...

These are pretty similarthe population standard deviation

These are pretty similar: The population standard deviation of the number of people who shop online is 3.1. If you want to be 99% confident that the sample mean is within 2% of the population mean, how many people must b ...

Hypothesesh0 there is no correlation between hours walking

Hypotheses H0 There is no correlation between hours walking and weight loss. H1 There is a positive correlation between hours walking and weight. H2 There is a negative correlation between hours walking and weight loss. ...

Researchers use hierarchical regression cross-lagged panel

Researchers use hierarchical regression, cross-lagged panel designs, and structural equations modeling to partly resolve the problems associated with inferring causality from correlation. a. Describe how each of these an ...

Assignmentthe production department of the newspaper wants

Assignment The production department of the newspaper wants to ensure that the mean blackness of the print for all newspapers is at least 0.97 on a standard scale in which the target value is 1.0. A random sample of 50 n ...

Consider a normal population with mu 47 and sigma 6

Consider a normal population with μ = 47 and σ = 6. Calculate the z-score for an x of 46.3 from a sample of size 26. (Give your answer correct to two decimal places.

Module assignmentthe paired data below consists of test

Module Assignment The paired data below consists of test scores and hours of preparation for 5 randomly selected students. Use this data set to answer the questions below: x Hours of preparation   5    2    9   6   10 y ...

When how and why was israel created discuss the six day

When, how, and why was Israel created? Discuss the Six Day War and the Yom Kipper War from both the Israeli and Arab points of view. Who are the most important leaders and personalities in the Middle East today?How might ...

Scenario dr olson is interested in the effects of three

Scenario: Dr. Olson is interested in the effects of three different methods for losing weight in long-distance truck-drivers. He tested a sample of 60 truck drivers. Participants were randomly assigned to one of three gr ...

Assignment choice 1 the great migrationwrite an essay on

Assignment Choice #1: The Great Migration Write an essay on the great migration of the black population to the northern United States.  What were the reasons for the great migration? What were some of the risks involved ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen