The null hypothesis for a non-directional independent-measures t-test states:
a. M – μ = 0
b.M1 –M2 =0
c. μ1 – μ2 = 0
d. M1 – M2 ≠ 0
e. μ1 – μ2 ≠ 0
The null hypothesis for a non-directional independent-measures t-test states: a. M – μ = 0 b.M1...
The null hypothesis for the independent-measures t-test states _____ A) M1 - M2 = 0 B) μ1 - μ2 ≠ 0 C) μ1 - μ2 = 0 D) M1 - M2 ≠ 0
For a correlated groups t test, the null hypothesis states that _____. H0: μ1 - μ2 = 0 H0: μ1 - μ2 > 0 Ha: μ1 - μ2 = 0 Ha: μ1 - μ2 = 0
In a two tailed (non-directional) t-test, if the null hypothesis is true, what is the t value ? 0? 10? -2? or not equal to 0?
Question 31 2 pts Which of the following is the correct null hypothesis for an independent- measures t test? O My - M270 O M4 - M2 = 0 O My-M250 O M1 - M2 = 0
Decide what analysis technique or null hypothesis best corresponds to the question posed. Do scores on a test of science achievement differ for female and male 8th grade students? Select one: a. μ=kμ=k. b. Use the normal curve. c. Calculate the appropriate confidence interval. d. μ1=μ2μ1=μ2 (dependent samples). e. μ1=μ2μ1=μ2 (independent samples)
the alternative hypothesis for an independent measures t test states a. there is no mean difference between the 2 populations being compared b. there is no mean difference between the 2 samples being compared c. there is a none zero mean difference between the 2 populations being compared d. there is a none zero mean difference between the 2 samples being compared
4. Null hypotheses for an independent measures t test Which of the following null hypotheses is appropriate for an independent-measures Ho: 0 Ho Hous
What is the critical t value (one sample t-test) for a non directional hypothesis with an alpha level of .05 and a sample size of 30? A. t-critical is 1.699 B. t critical is 2.045 C. t critical is 2.042 D. t critical is 2.457
For the independent-measures t test, which of the following describes the estimated standard error of M1 - M2 (whose symbol is )? O The variance across all the data values when both samples are pooled together O A weighted average of the two sample variances (weighted by the sample sizes) O The difference between the standard deviations of the two samples O An estimate of the standard distance between the difference in sample means (M, - M2) and the difference...
(1 point) (Give answers to at least two decimal places. For simplicity, use the standard normal distribution bacause the samples are both large.) In order to compare the means of two populations, independent random samples of 4 observations are selected from each population, with the following results: Sample 1 Sample 2 81 -15582-125 Use a 97 % confidence interval to estimate the difference between the population means (M1-12). -304.502 (b) Test the null hypothesis: H0 the test statistic z The...