Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

find out sample mean and sample standard deviation for the given set of data. Formulate null and alternative hypothesis to test the claim that the sleeping pill is effective at a 1 percent level of significance.

A pharmaceutical company wants to test the effectiveness of an experimental sleeping pill.  An experiment is conducted over two nights, with 10 volunteers who have difficulties sleeping at night.  On the first night, each of the ten persons is given the sleeping pill one hour before bedtime and the time needed to fall asleep is recorded.  On the second night, the same persons are given a placebo in the form of a pill that looks exactly as the real one (without being told about it) and the time needed to fall asleep is again recorded.  The times needed to fall asleep are assumed to follow a normal distribution.  The results for the two nights for the ten volunteers are shown below:

Individual

A

B

C

D

E

F

G

H

I

J

Pill

4

7

10

15

6

13

6

11

1

11

Placebo

7

8

9

16

10

15

8

15

4

10


Compute the mean and variance of the sample data.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921023

Have any Question? 


Related Questions in Statistics and Probability

Onenbspstudy based on responses 1014nbsprandomly

One study, based on responses 1,014 randomly selected teenagers, concluded that 39% of teenagers cite grades as their greatest source of pressure. Use a 0.05 significance level to test the claim that fewer than half of a ...

Suppose amongst all the families on a caribbean cruise the

Suppose amongst all the families on a Caribbean Cruise, the population variance of the number of children per family is 4. If we were to take a sample of 10 families, then the probability is .9 that the sample variance i ...

Shoesmith wave inc a new and largely unproven economic

Shoesmith Wave, Inc., a new and largely unproven economic forecasting service, expects the inflation rate in South Korea to average 9 percent per year over the next five years. In comparison, Shoesmith expects a U.S. inf ...

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. ...

1 what is the range and why is it not ideal as an index of

1. What is the range, and why is it not ideal as an index of variability? 2. Give a definition of variance, then explain how you would calculate it. 3. How does variance differ from the total sum of squares?

1 all successful empires share certain characteristics what

1. All successful empires share certain characteristics. What are these characteristics and how do they relate to the rise of the Muslim empires? Put Islam in its historical context and explain how the Umayyad and Abbasi ...

The course text notes that tensions and differences in the

The course text notes that tensions and differences in the 1770s led to the American Revolution that eventually produced independence for the United States from Great Britain. When the War for American Independence broke ...

Data were collected from three populations using a

Data were collected from three populations using a completely randomized design. The following describes the sample data: n1 = n2 = n3 =6 R1 = 55 R2 = 64 R3 = 78 Conducting a test of hypothesis to verify whether there is ...

Do we know what the founding fathers said about the

Do we know what the Founding Fathers said about the institution of slavery in the U.S Constituion? Is the U.S. Constitution pro-slavery, anti-slavery or ambivalent about slavery?

Imagine that your town or city has increased its nighttime

Imagine that your town or city has increased its nighttime police patrols to reduce crime. Design two quasi-experiments to determine whether this intervention has been effective, one that uses some variation of a nonequi ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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