Question: An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 80% of people suffering from insomnia. After examining the

An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 80% of people suffering from insomnia. After examining the dosage we feel that his claims regarding the effectiveness of his dosage are inflated. In an attempt to disprove his claim, we administer his prescribed dosage to 50 insomniacs and observe that 37 of them have had sleep induced by the drug dose. Is there enough evidence to refute his claim at the 5% level of significance?

Step by Step Solution

★★★★★

3.53 Rating (173 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The hypothesis of interest is H 0 p 80 versus H a p 80 with xn 3750 74 the test s... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

879-M-S-H-T (5122).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

John must work at least 20 hours a week to supplement his income while attending school. He has the opportunity to work in two retail stores. In store 1, he can work between 5 and 12 hours a week,...

An experimenter is interested in the hypothesis testing problem H0 : > 420.0 versus HA :

For the previous exercise, show a hypothetical set of population means for the four groups that would have a. A dose effect but no drug effect. b. A drug effect but no dose effect. c. A drug effect...

An experimenter is interested in examining the bond strength of a new adhesive product prepared under three different temperature settings (280 F, 300 F, and 320 F) and four different pressure...

15. A Cure for Insomnia An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 80% of people suffering from insomnia. After examining the dosage we feel that his...

stats help Find the appropriate rejection regions for the large-sample test statistic z in these cases. (a) A left-tailed test at the 10% significance level. (Round your answers to two decimal...

QUESTION 1 Suppose that 20% of the fields in a given agricultural area are infested with the sweet potato whitefly. One hundred fields in this area are randomly selected, and 45 are found to be...

An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 80% of people suffering from insomnia. After examining the dosage we feel that his claims regarding the...

9.40 A Cure for Insomnia An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 80% of people suffering from insom- nia. After examining the dosage, we feel that...

Suppose that 20% of the fields in a given agricultural area are infested with the sweet potato whitefly. One hundred fields in this area are randomly selected, and 45 are found to be infested with...

An experimenter has prepared a drug-dose level that he claims will induce sleep for at least80% of people suffering from insomnia. After examining the dosage we feel that his claims regarding the...

Wilderness Products, Inc., has designed a self-inflating sleeping pad for use by backpackers and campers. The following information is available about the new product: a. An investment of $1,350,000...

Suggest a mechanism for each of the following trans-formations. Some involve pericyclic reactions only; others involve pericyclic reactions as well as other steps. Invoke the appropriate selection...

A taxpayer is no longer eligible to claim the Earned Income Credit if they have more than _ _ _ _ _ _ of investment income in 2 0 2 4 .

A large concert promoter that operates several hundred concert locations around the country wants to survey the managers at these locations to ask their opinions about how to improve attendance at...

Apply critical thinking to an engineering-relevant issue that is important to you. Create a written document that lists the issue, your reasoning, and your conclusion.

In Problem 67, Chapter 7 (Figure P7.31), the block diagram of a cascade scheme for the speed control of an HEV (Preitl, 2007) was represented as a unity feedback system. In that diagram the output of...

How many k-substrings does an n-string have? (Consider identical k-substrings at different positions to be different.) How many substrings does an n-string have in total?

Suppose you buy 100 shares of a stock at $12 per share, then another 100 at $10 per share, and then sell 150 shares at $15. You have to pay taxes on the gain, but exactly what is the gain? In the...

If the joint density function of X and Y is given by Find the expected value of .

8.28 A random sample of n = 300 observations from a binomial population produced x = 263 successes. Find a 90% confidence interval for p and interpret the interval.

8.27 Find a (1a)100% confidence interval for a population mean for these values: = a. a 0.01, n = 38, x = 34, s = 12 b. a 0.10, n = 65, x=1049, s2=51 = c. = 0.05, n = 89, = 66.3, s = 2.48

8.26 Find a 90% confidence interval for a population mean for these values: a. n = 125, x=0.84, s = 0.086 b. n 50, x 21.9, s = 3.44 e. Interpret the intervals found in parts a and b.

Consider a box with 5 tickets, numbered from 1 to 5. We will draw 200 times with replacement from this box. (a) The expected value of the sum of draws is ___________ and the standard error is...

d. The expected value of the test statistics is 9.21 and the critical value is 5.72, hence we conclude that the amount of smoking is dependent on seat belt usee. The expected value of the test...

Circle your answers when necessary. Solutions without work or reasoning may not receive credit. This HW is worth 15 points. 1. Are the following samples independent or dependent (paired)? As part of...