Question

research hypothesis stating the treatment effect in contrast to the statement of null effect alternative hypothesis...

research hypothesis stating the treatment effect in contrast to the statement of null effect

alternative hypothesis

central limit theorem

sampling bias

two-tailed test

upper probability value allowed for rejecting the null hypothesis

significance level

parameter

type 1 error

two-tailed test

drawing conclusions about a population from sample data

empirical data

inferential statistics

discrete distribution

random sampling

Assume that a new treatment for helping alcoholics isn't any better than an old treatment. A researcher, who doesn't know this, designs a study to compare the effectiveness of the two treatments. Based on the results of the study the researcher rejects the Null Hypothesis. What outcome has occurred?

scientific validation

type I error

type II error

correct rejection

Which of the following is true if a statistical test is significant at the 0.01 level ( p<0.01)?

it is not significant at .05 level

it is also significant at .05 level

a type 2 error has occurred

it is also significant at the .001 level
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

TOPIC:Questions on testing of hypothesis.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
___ non-directional test       ___ directional test      ___ alpha level           ___ null hypothesis     ___ alternative hypothe
___ non-directional test       ___ directional test      ___ alpha level           ___ null hypothesis     ___ alternative hypothesis      e. ___ rejection range     ___ inferential            ___ inference             ___ significance tests ___ statistical power a. The hypothesis that is rejected or retained using inferential statistics and is often the opposite of what the researcher believes to be true. b. The researcher hypothesizes that a given score will be either higher or lower than the chosen level of significance. c. The likelihood of rejecting the null hypothesis...
A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05....
A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05. If the sample data produce a z-score statistic of z = -1.24, then what is the correct decision? Reject the null hypothesis and conclude that the treatment has no effect. Reject the null hypothesis and conclude that the treatment has an effect. Fail to reject the null hypothesis and conclude that the treatment has an effect. Fail to reject the null hypothesis and conclude...
Question #3 A researcher is conducting and experiment to evaluate a treatment that is expected to...
Question #3 A researcher is conducting and experiment to evaluate a treatment that is expected to increase the scores for individuals in a population. If the researcher uses a one-tailed test with ( a = .01), then which of the following correctly identifies the critical region? A. z > 2.33 B. z > 2.58 C. z < 2.33 D. z < 2.58 Question #4 A researcher evaluates a treatment effect using a two tailed hypothesis test with ( a =...
a researcher conducts a hypothesis test to evaluate the effect of the treatment. the hypothesis test...
a researcher conducts a hypothesis test to evaluate the effect of the treatment. the hypothesis test produces a z-score of z= 2.75. Assuming that the researcher is using a two-tailed test,what decision should be made?
A researcher conducted a single-sample null hypothesis test with the z-statistic. The researcher reports that z...
A researcher conducted a single-sample null hypothesis test with the z-statistic. The researcher reports that z = +1.30. This z-statistic was calculated from sample data that was drawn from a normal population. The researcher sets α = .05 and uses a two-tailed test. On the basis of his data, the researcher decides to fail to reject the null hypothesis. Did the researcher make the correct decision or did he make an error? If he made an error, what type of...
For your answers pick one *A researcher was interested in inspecting the effect of classical music...
For your answers pick one *A researcher was interested in inspecting the effect of classical music on stress among New York students. She studied a sample of 30 New York students. She found that z= -3.00. Using a = 0.5(two-tailed), what can she conclude? -Reject the null hypothesis and conclude that classical music has no effect on stress levels -Reject the null hypothesis and conclude that classical music has no effect on stress levels -Failed to reject the null hypothesis...
1.) Choose the true statement. a.) If a null hypothesis is rejected for a test statistic...
1.) Choose the true statement. a.) If a null hypothesis is rejected for a test statistic at the α=0.05 level, then at the α=0.01 level it would never reject. b.) If a null hypothesis is rejected for a test statistic at the α=0.05 level, then at the α=0.01 level it would always reject. c.) If a null hypothesis is rejected for a test statistic at the α=0.05 level, then at the α=0.01 level it may or may not reject. 2.)...
1. After summarizing data collected to test a null hypothesis (e.g., observing z as a test...
1. After summarizing data collected to test a null hypothesis (e.g., observing z as a test statistic), a researcher fails to reject the null hypothesis (p > .05). The researcher then concludes that there is no treatment effect (treatment does not affect variation on the DV). Is this a correct conclusion? a. yes, it is correct b. no, it is incorrect; a decision to fail to reject the null hypothesis results in ignorance about a treatment effect 35. Consider z...
_____11) If the null hypothesis is that the population mean is equal to 150 and a...
_____11) If the null hypothesis is that the population mean is equal to 150 and a sample                 mean of 113 gave significant support against the null hypothesis, which of the                 following sample means would be certain to give support against the null                  hypothesis.     a) 114                              b.) 122                   c.) 264               d.) 112 _____12) If the p-value is less than the significance level, you would .      a.) reject the null hypothesis         b.) accept...
The null hypothesis states there will be no difference in scores on the ADS between those...
The null hypothesis states there will be no difference in scores on the ADS between those who receive the standard treatment program and those who receive the standard treatment program plus Mindfulness Therapy. The output from the analysis is below. The results are t(19) = 1.554, p = .137. Paired Sample Statistics Mean N Std Deviation Std. Error Mean Pair 1 Standard Std. Mindfulness 12.8000 10.9500 20 20 3.81962 4.28553 .85409 .95827 Paired Samples Correlations N Correlations Sig Pair 1...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT