Question

What are the assumptions underlying the use of the t distribution in testing hypothesis about the...

What are the assumptions underlying the use of the t distribution in testing hypothesis about the population mean?

Homework Answers

Answer #1

The first assumption made regarding t-tests concerns the scale of measurement. The assumption for a t-test is that the scale of measurement applied to the data collected follows a continuous or ordinal scale, such as the scores for an IQ test.

The second assumption made is that of a simple random sample, that the data is collected from a representative, randomly selected portion of the total population.

The third assumption is the data, when plotted, results in a normal distribution, bell-shaped distribution curve.

The fourth and final assumption is a reasonably large sample size is used. A larger sample size means the distribution of results should approach a normal bell-shaped curve.

Know the answer?
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
Similar Questions
What are the assumptions underlying the use of the t distribution in testing hypothesis about the...
What are the assumptions underlying the use of the t distribution in testing hypothesis about the population mean?
Is it okay to use hypothesis testing with a t test when population distribution is not...
Is it okay to use hypothesis testing with a t test when population distribution is not normal? Provide the reason why.
Hypothesis Testing for Population Means When the Population Standard Deviation is NOT known. Use the t-distribution...
Hypothesis Testing for Population Means When the Population Standard Deviation is NOT known. Use the t-distribution tables, Table C for these questions. For each of the following situations complete the steps listed below. a. State the Alternative and null Hypotheses. b. State the Level of Significance c. Calculate the Test Statistic. d. Draw a conclusion as to Rejecting or Failing to Reject the Null. Teacher’s salaries in one state are very low, so low that educators in that state regularly...
1. Assumptions underlying the use of t-statistic in sample-based estimation are that the population is normally...
1. Assumptions underlying the use of t-statistic in sample-based estimation are that the population is normally distributed and population standard deviation is unknown. A. True B. False 2. The null hypothesis is rejected if the p-value (i.e., the probability of getting a test statistic at least as extreme as the observed value) is greater than the significance level. A. True B. False 3. When using the p-value to test hypotheses, the null hypothesis would be rejected if __________. A. the...
Use Table C (t-distribution) to find p-values for a hypothesis test about a mean, taking your...
Use Table C (t-distribution) to find p-values for a hypothesis test about a mean, taking your sample size (N) to be 15. We assume that the population is normally distributed. t=1.87, two-sided t=2.09, one-sided (Ha: μx > μ0) t=-2.33, one-sided (Ha: μx < μ0) t=0.51, two-sided
Nonparametric or distribution-free statistical procedures make no assumptions about the form of the underlying distribution other...
Nonparametric or distribution-free statistical procedures make no assumptions about the form of the underlying distribution other than it is continuous. A) True B) False When you have a choice between using a parametric test or a nonparametric test, you are better to choose the non-parametric test because it will be more efficient and be a higher power test. A) True B) False
Which of the following is not an assumption underlying the independent-measures t formula for hypothesis testing?...
Which of the following is not an assumption underlying the independent-measures t formula for hypothesis testing? The observations within each sample must be independent. The two populations from which the samples are selected must be normal. The two samples must have equal sample sizes. The two populations from which the samples are selected must have equal variances.
T F 1. A p-value of .008 in hypothesis testing means there is only a .8%...
T F 1. A p-value of .008 in hypothesis testing means there is only a .8% chance we could get such sample statistics from the population if the null hypothesis is as stated. Such an event is considered unlikely and we would reject the null hypothesis. T F 2. As a general rule in hypothesis testing, it is always safer to set up your alternate hypothesis with a greater-than or less-than orientation. _____3. If the level of significance is .02...
Which of the following are assumptions for the independent-measures t formula for hypothesis testing? 1) The...
Which of the following are assumptions for the independent-measures t formula for hypothesis testing? 1) The observations within each sample must be independent 2) The two populations from which the samples are selected must be normal 3) The two populations from which the samples are selected must be have equal variances 4) All of the above
What are the assumptions underlying the use of a dividend growth model for the estimation of...
What are the assumptions underlying the use of a dividend growth model for the estimation of a company s cost of equity? Explain in details and give some examples
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT