Question

In: Math

The test statistic for a sign test is the smaller of the number of positive or...

The test statistic for a sign test is the smaller of the number of positive or negative signs. True False

Solutions

Expert Solution

The given statement is incorrect.

The signs test is an example of non-parametric test which is used to test if the population median is equal to some particular value, say . Let

denote the number of observations that are greater than

denote the number of observations that are lesser than

Logically, if the null hypothesis is assumed to be true, then, the number of observations which are greater than must be equal to number of observations smaller than , thus, implying that both and follow the Binomial distribution with parameters, and  .

The test statistic for the signs test, is:

Now the p-value (that is the probability of obtaining a value greater than or equal to ) will be computed using the Binomial distribution and compared with the level of significance, , to make a decision regarding the acceptance (if p-value > ) or the rejection (if p-value < ) of the null hypothesis.

​​​​​​​


Related Solutions

Sign test for paired datas conceptions My professor said for the sign test we are not...
Sign test for paired datas conceptions My professor said for the sign test we are not testing median_x=median_y and the difference median(x-y) is not equal to median_x-median_y I am so confused. Please tell me are we testing if two samples have the same median??? Please explain the conception and give out some examples follow the comment as well
1. For the standardized test statistic approach to hypothesis testing, calculate the test statistic for testing...
1. For the standardized test statistic approach to hypothesis testing, calculate the test statistic for testing the null hypothesis that the population mean is less than or equal to 9.29, given a sample mean of 13.90, a sample size of 35, and a population standard deviation of 3.92. Round to two decimals. 2. Using the traditional hypothesis testing approach, calculate the critical value for testing the null hypothesis that the population mean is greater than or equal to 13, given...
) Explain when you will use the test statistic  and when you will use the test statistic...
) Explain when you will use the test statistic  and when you will use the test statistic .   2) Explain why using the smaller of n1 − 1 or n2 − 1 degrees of freedom to determine the critical t instead of  is more precautious.   3) you learned how to test hypotheses regarding two sample proportions.  Explain when you will use the test statistic  and when you will use the test statistic .  
1. Match the following situations with the correct test statistic distribution. Provide the correct test statistic...
1. Match the following situations with the correct test statistic distribution. Provide the correct test statistic you would use (or what type of test). Provide an explanation as to why this is the correct distribution or test. (2 points) A. normal distribution B. t distribution with 29 degrees of freedom C. t-distribution with 70 degrees of freedom D. Chi-square with 2 degrees of freedom E. Chi-square with 1 degree of freedom Match Question Items __ ___ A. The sponsors of...
Do not answer using a percent sign, a dollar sign or with a number containing commas....
Do not answer using a percent sign, a dollar sign or with a number containing commas. For the questions involving rates, you can answer as a percent (for example 10) or as a decimal (for example 0.1). 1.4 Assume you purchased a share of stock for $80 on January 1, 2008 and sold the share of stock for $30 on December 31, 2012. If the stock paid no dividends what your average yearly growth rate? 1.5 Suppose the average growth...
Do not answer using a percent sign, a dollar sign or with a number containing commas....
Do not answer using a percent sign, a dollar sign or with a number containing commas. For the questions involving rates, you can answer as a percent (for example 10) or as a decimal (for example 0.1). 1.1 Suppose you purchased 100 shares of stock for $40 on January 1, 2003 and sold the share of stock for $100 on December 31, 2012. If the stock paid no dividends what is your holding period return? 1.2 Suppose you purchased 100...
a. What sign of a positive chemical reaction will be observed in the "Reactions of Known...
a. What sign of a positive chemical reaction will be observed in the "Reactions of Known Solutions" tests? b. What three test reagents will be used? Write their correct chemical formulas
If a patient has a positive Kernig sign, is their diagnosis a form of meningitis or...
If a patient has a positive Kernig sign, is their diagnosis a form of meningitis or can encephalitis also be a cause?
What is the difference between the wilcoxon signed test and the normal sign test?
What is the difference between the wilcoxon signed test and the normal sign test?
A) A test statistic value of 2.14 puts it in the rejection region. If the test...
A) A test statistic value of 2.14 puts it in the rejection region. If the test statistic is actually 2.19 then we know the p-value is less than the significance level for the test. True or false? Explain. B) The null hypotheses is false. The p-value is less than the significance level. Do we have a type 1 error, a Type 2 error, or a correct decision. Give an explanation. C) For a right tailed test a test statistic of...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT