Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

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

A pharmaceutical company wants to test the efficiency 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 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

Estimation with 95 percent confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921030

Have any Question? 


Related Questions in Statistics and Probability

Three experiments investigating the relation between need

Three experiments investigating the relation between need for cognitive closure and persuasion were performed. Part of the study involved administering a "need for closure scale" to a group of students enrolled in an int ...

1 compute pearsons r between the life satisfaction variable

1. Compute Pearson's r between the life satisfaction variable and the family income variable in Table 1. Test the r for statistical significance, and draw conclusions about the meaning of the test. 2. Compute a Pearson c ...

A philosophy professor assigns letter grades on a test

A philosophy professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below the top 12% and above the bottom 63% C: Scores below the top 37% and above the bottom 22% D: ...

1 consider a test of h0 mu le 100 versus h1 mu gt 100

1. Consider a test of H0 : μ ≤ 100 versus H1 : μ > 100. Suppose that a sample of size 20 has a sample mean of X = 105. Determine the p-value of this outcome if the population standard deviation is known to equal  (a) 5; ...

Be sure to read each question carefully and answer all

Be sure to read each question carefully and answer all parts. For all Stata questions, be sure to provide the log output (which should be edited and commented so that it is easier to grade).  Q1. Find an article THAT YOU ...

You are playing blackjack in a casino the casino is using a

You are playing blackjack in a casino. The casino is using a single, 52 card deck. Shuffling the deck takes time. So rather than shuffling the deck after each hand, the casino deals three hands before shuffling. The used ...

Probabilities of graduation and publicationprofessors have

Probabilities of Graduation and Publication Professors have hundreds of students in their classes each year. Some professors teach only upper division courses to students who are in their major course of study. Of this g ...

In a manufacturing process a random sample of 36 bolts

In a manufacturing process a random sample of 36 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches. What is the 99% confidence interval for the true mean length of the bolt? Please s ...

Imagine that you have collected the following set of iq

Imagine that you have collected the following set of IQ scores: 110 124 100 125 104 119 98 130 76 95 143 90 132 102 125 96 99 78 100 80 112 112 103 88 94 108 88 132 87 119 109 104 104 100 119 99 135 128 92 110 90 92 120 ...

What are the entry level steps to use analytical solver on

What are the entry level steps to use Analytical Solver on excel to create a spreadsheet model and solve it by using solver?

  • 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