what is the best t test for a test with one subject tested under two different...
what is the best graph to represent the time interval bewteen CAP 1 anf CAP 2 on a toad nerve tested at room temperature and then at a cooled temperature
Miriam is using a one-sample t-test on the following group: Subject #15: 6.5 hours Subject #27: 5 hours Subject #48: 6 hours Subject #80: 7.5 hours Subject #91: 5.5 hours Select the two TRUE statements. a.) The t-distribution that Miriam uses is taller and has thinner tails than a normal distribution. b.) The value for the degrees of freedom for Miriam's sample population is five. c.) The t-distribution that Miriam uses is shorter and has thicker tails than a normal...
Which Test those cases should use? A: one sample z-test B: one-sample t-test C: t-test for the difference between means for two related samples D: t-test for the difference between means for two independent samples with homogeneity of variance E: t-test for the difference between means for two independent samples with heterogeneity of variance F: a one sample z-test for proportions (or a chi-square goodness of fit) G: chi-square goodness of fit only (where a one sample z-test of proportions isn’t appropriate) H: a two-sample z-test...
Under what conditions is the one-way ANOVA test equivalent to, worse, and better than the t-test?
Under what conditions is the one-way ANOVA test equivalent to, worst, and better than the t-test ?
In a study examining the effect of room temperature on academic performance, researchers tested knowledge of basic statistical concepts for two groups of Introduction to Statistics students who took their exams in rooms with different temperatures. One group took their exam in a room heated to 70 degree Fahrenheit and the second group in a room heated to 90 degrees Fahrenheit. The mean number of items student correctly answers in the 70 degree room (M=7.9 out of 10) was significantly...
11. What is the null hypothesis for a t-test for two independent groups? a. If mul and mu2 are the population means of the two groups, then the null hypothesis is Ho: mul-mu2=0. b. If sl and s2 are the population standard deviations of the two groups, then the null hypothesis is Ho: sl-s2=0. 12. Differentiate between a data set that should be analyzed using a paired t-test from a data set that should be analyzed using a t-test for...
Create two different data sets such that a T test under the assumption of equal variances will reject the null hypothesis, but the T test under the assumption of unequal variances (Hint: Welch's T statistic) will fail to reject the null hypothesis. Explain why the two data sets fail to reject under unequal variance assumption and why it rejects until equal variance assumption. Thanks
Hypothesis Testing_03 (two independent samples) m the detection temperature under load for two different vnes of plastie pipe is being investee samples of 15 pipe specimens are tested and the detection temperatures observed are as follows ( 7) Type_01: 193 207 206 210 205187194 178 205 185 189213192 188 194 Type_02: 176 180 185 200 197 192 198 177 188 197 189 206 201 203192 a. Write down the null and alternative hypotheses to test if the deflection temperature under...
1. When do we use an independent groups t-test? 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 t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...