Please state two research questions that might be answered with a Null hypothesis significance test/ please...

Please state two research questions that might be answered with a Null hypothesis significance test/ please state in everyday language what the "NULL/COMPARISON" hypotheses would be, as well as the ALTERNATIVE/RESEARCH hypothesis.

Expert Solution

A research question is a brief or to the point query on social or economical or any field of interest of a researcher on which he is supposed to work on. It is the first topic any researcher should focus on.

Two example of research question with hypothesis are :

1. Does the big five personality traits (extroversion, neuroticism, agreeableness, openness to experience, conscientiousness) affect the academic performance of a student?

Thwre can be five hypothesis, one for each of the personality traits.

Null hypothesis H01 : Extroversion do not affect the academic performance of a student.

Alternative hypothesis H11 : Extraversion affects the academic performance of a student.

H02 : Neuroticism does not affect the academic performance of a student.

H12 : Neuroticism affects the academic performance of a student.

H03 : agreeableness does not affect the academic performance of a student.

H13 : agreeableness affects the academic performance of a student.

Etc.

2. Whether the new laws have any effect on the number of people who drive after drinking in New York city?

Null hypothesis H0 : The new laws have no effect on the number on the number of people who drive after drinking in the New York city.

Alternative hypothesis H1 : The new laws have a significant effect on the number of people who drive after drinking i.e they resulted in reduced number of drunk drivers.

orchestra answered 2 years ago

For a two-tailed hypothesis test at the significance level alpha, the null hypothesis H0: μ =...

For a two-tailed hypothesis test at the significance level alpha, the null hypothesis H0: μ = μ0 will be rejected in favor of the alternative hypothesis Ha: μ≠ μ0 if and only if μ0 lies outside the (1 - α) level confidence interval for μ. Illustrate the preceding relationship by obtaining the appropriate one-mean z-interval for the data below. Suppose the mean height of women age 20 years or older in a certain country is 62.8 inches. One hundred randomly...

For a two tailed hypothesis test at the significance level a, the null hypothesis H0: M=M0...

For a two tailed hypothesis test at the significance level a, the null hypothesis H0: M=M0 will be rejected in favor of the alternative hypothesis Ha: M does not = M0 lies outside the (1-a) level confidence interval for M. Illustrate the preceding relationship by obtaining the appropriate one mean t interval for the data below. According to a survey, the average person watched 4.53 hours of television per day in 2005. A random sample of 20 people gave the...

If the test is done at a 5% level of significance, the null hypothesis should

n = 49 H0: μ = 50 x = 54.8 Ha: μ ≠ 50 σ = 28 If the test is done at a 5% level of significance, the null hypothesis should a. not be rejected b. be rejected c. Not enough information given to answer this question. d. None of the other answers are correct.

10.3 Significance Test for the Slope. Test the null hypothesis that the slope is zero versus...

10.3 Significance Test for the Slope. Test the null hypothesis that the slope is zero versus the two-sided alternative in each of the following settings using the α = 0.05 significance level: a.) n = 20, ŷ = 28.5 + 1.4x, and SEb1 = 0.65 b.) n = 30, ŷ = 30.8 + 2.1x, and SEb1 = 1.05 c.) n = 100, ŷ = 29.3 + 2.1x, and SEb1 = 1.05 The correct answers (answers from the...

Why do we test the null hypothesis and not our research hypothesis?

1-Give an example of a null hypothesis and alternate (research) hypothesis that might be a good...

1-Give an example of a null hypothesis and alternate (research) hypothesis that might be a good use of a t-test for independent samples.

14. In formulating hypotheses for a statistical test of significance, the null hypothesis is often ...

14. In formulating hypotheses for a statistical test of significance, the null hypothesis is often a. a statement of “no effect” or “no difference.” b. the probability of observing the data you actually obtained. c. a statement that the data are all 0. d. 0.05. 15. In assessing the validity of any test of hypotheses, it is good practice to a. examine the probability model that serves as a basis for the test by using...

State the Null Hypothesis State the Alternative Hypothesis Find the test statistic Find the critical value...

State the Null Hypothesis State the Alternative Hypothesis Find the test statistic Find the critical value or values State the conclusions to the hypothesis test. Please find all of the above for the scenarios below Part I. A university is looking into its mathematics placement procedure. The university assumes its population mean math SAT score of all incoming freshmen is 600. Suppose that a simple random sample of 33 freshmen at that university reveals a mean math SAT score of...

State what is the null hypothesis in a chi-square test & what is the alternative hypothesis...

State what is the null hypothesis in a chi-square test & what is the alternative hypothesis Explain what probability is represented by the p-value. What can you conclude when p-value is below the threshold of significance (e.g., p = 0.05)? What would you conclude when p-value is above the critical value? Is there a statistically significant association between one of the alleles tested and the Taster phenotype? Which genotype is over-represented in the Non-Tasters? Which allele is over-represented in the...

Whenever you are asked to test a hypothesis, be sure to: (a) state the null and...

Whenever you are asked to test a hypothesis, be sure to: (a) state the null and alternative hypotheses; (b) state the relevant sample statistic; (c) give the rejection region; (d) compute the test; (e) give your decision and a conclusion in English. Assume that last year, licensed American drivers drove an average of 10,000 miles, with a standard deviation of 2,000 miles (these are population figures). This year, the government campaigned to get people to save gas by driving less. To test...

Question