Question 8
When reporting data in a results section, it is ______ necessary to identify the type of t test computed.
a. 
significantly 

b. 
not 

c. 
usually 

d. 
always 
Question 8 When reporting data in a results section, it is ______ necessary to identify the type of t test computed. a. significantly b. not c. usually d. always
1. When do we use an independent groups ttest? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of ttests for true experiments versus quasiexperimental designs? a. b. We use the same ttest whether it...
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test performance. He designed four types of instruction for four samples of students. Later all four samples were given the same test and their average performance was compared. What statistical test should be used by the researcher to analyze the results of this study? A. Pearson correlation B. ttest for independent groups C. onefactor Anova for between groups D. Chi2 for Independence 2 A researcher...
A research report describing the results from a dependent samples t test states, "The data showed a significant difference between treatments, t(22) = 4.71, p < .05." From this report you can conclude that the number of people in the study is ________ and the test was ____________. (Note: Assume matched subjects are not used when answering this question.) a. 22, not significant b. 22, significant c. 23, not significant d. 23, significant
b. A. t > __ B. t > ___ C. t < __ d: A) The variances of the two populations are approximately the same. B) The population of differences is approximately normal C) The populations being sampled are approximately normal D) No assumptions are required Pair Population 1 60 Population 2 63 1 2. 24 25 3 53 55 The data for a random sample of 8 paired observations are shown in the table to the right. a. What...
D. evaporation QUESTION 50 The Valsalva maneuver usually results in: A. a reduced venous return B. dizziness C. a decrease in blood pressure D.a and b E. All of the above QUESTION 51 Blood lactate can be used directly as an energy source O A. Brain B. Heart OC. Liver D. chalatal muerla
PLEASE help ?? A researcher conducted a single sample ttest on results of an experiment with n = 18 participants and the computed t = 2.28. What is the correct conclusion from this experiment if p < 0.05, 2tails test is used for hypothesis testing? O A. The researcher failed to reject the null hypothesis and concluded that there is a significant treatment effect. O B. The researcher rejected the null hypothesis and concluded that there is a significant treatment...
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question Listed below are the weights in pounds of 11 players randomly selected from the roster of a championship sports team. Are the results likely to be representative of all players in that sport's league? 260 270 180 187 303 210 298 309 180 8 298 a. Find the mean. The mean is pound(s). (Type an integer or a decimal...
(1 point) Consider the conionsin(0) conic section T 5 +sin(0) a Determine the eccentricity b. Determine the type of conic section.? c. Determine the directrix. d. Determine the vertices. e. Determine the center f Determine the foci. g. Determine the minor axis length. h. Select the correct graph from those shown below.? (1 point) Consider the conionsin(0) conic section T 5 +sin(0) a Determine the eccentricity b. Determine the type of conic section.? c. Determine the directrix. d. Determine the...
QUESTION 8 [NOTE: The next 8 questions are all different parts of this question]. Before they can be marketed, all new medical devices must be approved by the Food and Drug Administration (FDA). A new device has a protective cover which needs to be removed easily. A similar device, already on the market, has a cover that requires an average force of 8 pounds to remove. The laboratory test data on a random sample of 9 of the new device...
(b) find the test statistic (t =?) (c) Find the reject region (t > ?) (d) estimate the difference in the mean discharge of effluents between plants A and D, using a 95% confidence interval. Round to three decimals Physioans depend on laboratory test results when managing medical problems such as diabetes or epilepsy. In a uniformity test for glucose tolerance, three different laboratories were each sent n5 identical blood samples from a person who had drunk 50 milligrams (mg)...