Question: A researcher hypothesizes that zylex, a new antidepressant, will affect concentration. It is known that scores on a standardized concentration test is normally distributed with

A researcher hypothesizes that zylex, a new antidepressant, will affect concentration. It is known that scores on a standardized concentration test is normally distributed with a µ= 50 and a σ= 12. A random sample of n=16 participants, aged 19-35, are chosen from the State of New Jersey. The sample is put on a six month dosage plan of zylex. After six months, all the participants are given a standardized concentration test. The researcher records the data and calculates a sample mean of M=56. Are the data sufficient to conclude that the drug, zylex, does have an effect on concentration?

Based on the above research scenario, please answer the following questions:

What is the independent variable? ___________________

What is the dependent variable? ________________________

Step by Step Solution

★★★★★

3.62 Rating (163 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

1To determine whether the data is sufficient to conclude that the drug zylex has an effect on concen... 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

Students Have Also Explored These Related Accounting Questions!

Scores on a statistics test are normally distributed with a mean of 75 and a standard deviation of 75. Decide whether the statement does make sense or not? Explain clearly.

A market researcher selects a simple random sample of n = 100 customers from its population of two million customers. After analyzing the sample, she states that she has 90% confidence that the mean...

A market researcher selects a simple random sample of n = 100 Twitter users from a population of over 100 million Twitter registered users. After analyzing the sample, she states that she has 95%...

413-432_CH18_Nachmias.qxd 1/17/07 3:47 PM Page 413 Chapter Index Construction and Scaling Methods INDEX CONSTRUCTION The Purpose of the Index The Sources of the Data The Base of Comparison Methods of...

Business Research MethodologyQuestion Bank 1 1. When the marketing department of an organization attempts to determine the amount of time the managers in this department spend at their computers in...

CHAPTER 14 The Massive Waterborne Outbreak ofCryptosporidium Infections, Milwaukee, Wisconsin, 1993 Jeffrey P. Davis, MD Wisconsin, 1993 INTRODUCTION: APRIL 5, 1993 On Monday morning, April 5, Dr....

Stat 1350 - Elementary Statistics Graded Homework Assignment 3 Unit 2, Lessons 1-2 1. Exhaust is bad for your heart. A CNET News article reported that the artery walls of people living within 100...

Stat 1350 - Elementary Statistics Graded Homework Assignment 3 Chapters 5, 6 and 7 5.2 Exhaust is bad for your heart. A CNET News article reported that the artery walls of people living within 100...

#11 1. A researcher is testing the effectiveness of a new antidepressant medication. A sample of n=9 clinically depressed patients is obtained and the current level of depression is measured for each...

You are required to review the enclosed article. Summarise the article State your view on the article Do you agree with the vie and opinion ? What is your own opinion on the issue ? Publisher:...

Adam Nichols, a former disc golf star, operates Metlock, Inc. At the beginning of the current season on April 1, the ledger of Metlock Inc. showed Cash $1,800, Inventory $2,400, and Common Stock...

15. Mr. Debtor owes Mr. Creditor P100, 000. On the due date, Mr. Debtor delivers a cashier's check for the full amount. Mr. Creditor refuses to accept the check. a. Debtor may make a consignation by...

How to identify hardware in a system using CLI or GUI? Make sure you cover the 5 major components of your computer along with the other components that are of interest (things like networking and GPU...

1. What music streaming services do students at Olympia High use? 33% of students use Apple Music, 41% use Spotify and 18% use both services. A-Apple Music S=Spotify (a) Create a two way table to...

If you borrow $15000 for 4 years at an interest rate of 7.44% per annum, with the interest compounding quarterly, how much will you have to pay at the end of the period? $_______________ (two decimal...

Onyemah Corporation uses the FIFO method in its process costing system. Operating data for the Brazing Department for the month of November appear below: Percent Complete with Respect to Units...

Show Me How Calculator Print Item ital and revenue expenditures Chart of Accounts Journal on February 14, Garcia Associates Co. paid $2,300 to repair the transmission on one of its delivery vans. In...

a) Show that (a, b) := {{a}, {b}} does not satisfy the ordered pair axiom. b) Determine whether each of the following statements is true or false. (Give a reason in each case): (i) {a, b} C (a, b)....

Identify which of these variables can and cannot be independent variables in an experiment. Explain your rationale for how you categorized each one. The weather Room color Participant ethnicity ...

Suppose you believe that students from your campus text more than most students. You collect data from 15 students about the number of texts they sent in the last hour and compare it to a national...

Name the type of contingency table (2 2, 4 6, etc.), the minimum sample size required, the chisquare statistic, and effect size statistic (if the chi-square is significant) that are most...

Three events occur with probabilities P(E1) = 0.35, P(E2) = 0.15, P (E3) = 0.40. If the event B occurs, the probability becomes P(E1 | B) = 0.25, P (B) = 0.30. a. Calculate P (E1 and B) b. Compute P...

The URS construction company has submitted two bids, one to build a large hotel in London and the other to build a commercial office building in New York City. The company believes it has a 40%...

CNN staff writer Pariia Bhatnagar reported (Coke, Pepsi Losing the Fizz, March 8, 2005) that Atlanta-based Coke saw its domestic market share drop to 43.1% in 2004. New York-based PepsiCo had used...