Write the null and alternative hypothesis for each of the following research questions.
6.73 Hypotheses. In each of the following situations, state an appropriate null hypothesis H0 and alternative hypothesis Ha. Be sure to identify the parameters that you use to state the hypotheses. (We have not yet learned how to test these hypotheses.) (a) A sociologist asks a large sample of high school students which academic subject they like best. She suspects that a higher percent of males than of females will name economics as their favorite subject. (b) An education researcher...
Determine the expected count under the null hypothesis. Is achieving a basic skill level in a subject independent to the location of the school? A random sample of students categorized by the location of school and the number achieving basic skills in three subjects is shown in the table. Subject Location of School Reading Math Science Totals Urban 43 42 38 123 Suburban 63 66 65 194 Totals 106 108 103 317 Under the null hypothesis for a Chi-square test...
For each of the hypothesis testing problems, find the followin a) State the null and alternative hypotheses. b) Calculate the expected results for the hypothesis test a. suming the null hypothesis is true and determine the hy pothesis test model, c) Formulate the decision rule. d) Determine the statistical result and test statistic. e) Determine the conclusion and answer the question(s) posed in the problem, if any The population norms (ie, parametersu, andơ) for a math- ematics anxiety test are...
Determine whether each of the following statements is a)research hypothesis directional or b) research hypothesis non directional or c) null hypothesis or d) not a test hypothesis : a. First born infants have higher concenteration of estrogens and progesterone in umbilical cord blood than do later born infants . B. there is no relationship between women's participation in prenatal classes and the health outcome of their infants . C. many nursing students are interested in obtaining advanced degrees D.A persons...
For each of the following situations, write the alternative hypothesis. (a) The null hypothesis is Ho: p = .40, and it is a two-sided hypothesis test. Hg: P ? » (b) The null hypothesis is Ho:p 3.55. H:P ? (c) The null hypothesis is Ho:p 2.45. Ha:p ?
Chapter 7 Hypothesis Testing Assignment 1. Write the null hypotheses IN SYMBOLS ONLY of the following alternative hypotheses. a. Hi: u > 9 b. Hi: u<47 c. Hi: u 725 2. Of the alternative hypotheses in the question above, which one(s) would need a two- tailed test? 3. In which type of test would it be easier to reject the null hypothesis, a one-tailed test or a two-tailed test? 4. What does it mean when you fail to reject the...
Formulate the null and research (alternative) hypothesis from the belove dataset. Research question is as follows; "What is the relationship between the price of a product and the quantinty supplied between a specific time period" Price Quantity supplied 14,5 7 13,4 8 12,7 6 16,4 10 21 15 13,9 11 17,3 21 12,5 10 16,7 14 22,7 20 14,5 12 12,3 10 15,6 8 20 14 14,2 8 12,6 6 18,2 12 17,3 8 14,3 7 11 6 14,5 7...
For each scenario described below, identify the null hypothesis (H0) and the alternative hypothesis (HA). (a) A long-distance roughwater swimming race takes place over a 2.5 mile course. Before the race, a random sample of the current velocity (in knots) along the race course is obtained to determine whether the race should be cancelled. A mean water current velocity of more than 0.65 knots is considered unsafe. (b) The Australian Department of Transportation reported that, on average, Australians drive 15,300...
Write the null and alternative hypothesis symbolically and identify which hypothesis is the claim. Is the test two-tailed, left-tailed, or right-tailed? Explain. Which test statistic will you use for your hypothesis test; z-test or t-test? Explain. What is the value of the test-statistic? Show your calculation Either find the p-value or critical value depending on your preference. Explain how you calculated or found it. What is your decision? Reject the null or do not reject the null? Explain why you...
Create the null and alternative hypotheses for the following research problems! We were told that there are about 55% of male students on CMU campus. But, as we can see from the class, the percentage seems to be different from 55%. Let’s conduct a study to confirm our theory.