Question

The effect of stress in the form of noise on the ability to perform a simple task was to be studied. Seventy subjects were di

0 0
Add a comment Improve this question Transcribed image text
Answer #1

The statistical software output for this problem is:

Two sample Z summary hypothesis test: μ1 : Mean of population 1 (Std. dev. = 12) μ2 : Mean of population 2 (Std, dev,-10) Hyp

Hence,

Ho: Option D is correct.

Ha: Option C is correct.

z = -1.48

P - value = 0.0694

Add a comment
Know the answer?
Add Answer to:
The effect of stress in the form of noise on the ability to perform a simple task was to be studi...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • To compare the effect of stress caused by noise on the ability to perform a simple...

    To compare the effect of stress caused by noise on the ability to perform a simple task, 72 subjects were divided into two groups—31 subjects as a control group, and 41 subjects as the experimental group. Although each subject performed the task, the experimental group had to perform the task while loud rock music was played. The time to finish the task was recorded for each subject and the following summary was obtained. Control Experimental n 31 41 x 19...

  • 2. An experiment about a person’s ability to perform some task before and after taking one...

    2. An experiment about a person’s ability to perform some task before and after taking one of the two drugs was conducted. The subjects performed the task that involved mental addition. The subjects were randomly divided into two groups. Each group drank a beverage containing one of two drugs, labeled A, B (placebo). After a period of time for the drugs to take effect, each subject repeated the mental addition test. We want to relate the after test score to...

  • 9. Eight subjects were asked to perform a simple puzzle assembly task under customary conditions and...

    9. Eight subjects were asked to perform a simple puzzle assembly task under customary conditions and under conditions of stress. During the stressful condition, the subjects were told a mild shock would be delivered 3 minutes after the start of the experiment and every 30 seconds or so thereafter until the task was completed. Blood pressure readings were taken under both conditions. The data in the table represent the highest reading during the experiment. Let mp denote the median difference...

  • Dr. Philip Lieberman, a neuroscientist at Brown University, conducted a field experiment to gauge the effect...

    Dr. Philip Lieberman, a neuroscientist at Brown University, conducted a field experiment to gauge the effect of high altitude on a person's ability to think critically. The subjects of the experiment were five males who took part in an American expedition climbing Mount Everest. At the base camp, Lieberman read sentences to the climbers while they looked at simple pictures in a book. The length of time (in seconds) it took for each climber to match the picture with a...

  • 1. Which of the following programs is superior in terms of its ability to direct payments...

    1. Which of the following programs is superior in terms of its ability to direct payments to those individuals or families in greatest need of assistance? A.Social assistance or welfare B.Unemployment insurance C.Canada Pension Plan D.None of the above choices are correct. 2. The difference between a conventional welfare program and a negative income tax program is that: A.Recipients of the negative income tax program will receive higher levels of total income than they would under conventional social assistance.   B.For...

  • Multiple choice 1. Which of the following programs is superior in terms of its ability to...

    Multiple choice 1. Which of the following programs is superior in terms of its ability to direct payments to those individuals or families in greatest need of assistance? A.Social assistance or welfare B.Unemployment insurance C.Canada Pension Plan D.None of the above choices are correct. 2. The difference between a conventional welfare program and a negative income tax program is that: A.Recipients of the negative income tax program will receive higher levels of total income than they would under conventional social...

  • Subject bias can occur in an experiment when the participants are aware of the purpose of...

    Subject bias can occur in an experiment when the participants are aware of the purpose of the study and respond in a way that they think the researchers want. For example, if participants believe they are in a study to test if coffee improves your mood, those who drank coffee might claim to be happier than they really are. Based on the information given, which of the following experiments is most likely to have the issue of a control or...

  • In randomized, double blind dinical trials of a new vaccine, children were randomly divided into two...

    In randomized, double blind dinical trials of a new vaccine, children were randomly divided into two groups Subjects in group received the new vaccine while subjects in group 2 received a control vaccine Ater the second dose 129 of 709 subjects in the experimental group group 1) experienced fever as a side effect her the second dome, 86 of 550 of the subjects in the control group group 2) experienced ferves as a side effect Does the evidence suggest that...

  • Select the studies below that use a matched pairs experimental design. To determine the effect of...

    Select the studies below that use a matched pairs experimental design. To determine the effect of wearing a helmet in a motorcycle accident, recent accident reports are collected. The reports are divided into two groups, those who were wearing a helmet at the time of the accident and those were were not. The difference of the mean severity for the two groups is computed. Participants in a study to determine the effects of a new weight-loss medication are divided into...

  • Select the studies below that use a matched pairs experimental design. (a).To determine the effect of...

    Select the studies below that use a matched pairs experimental design. (a).To determine the effect of wearing a helmet in a motorcycle accident, recent accident reports are collected. The reports are divided into two groups, those who were wearing a helmet at the time of the accident and those were were not. The difference of the mean severity for the two groups is computed. (b).A study is designed to test which of two new methods is better at teaching children...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT