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Take-Test_-Homework-3-2016-Fall-PSYC_SOC-205-TTh-8-10.

# Take-Test_-Homework-3-2016-Fall-PSYC_SOC-205-TTh-8-10. -...

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11/13/2016 Take Test: Homework 3 – 2016 Fall PSYC/SOC 205 TTh 8­10... ... 1/17 Content Homework Take Test: Homework 3 2016 Fall PSYC/SOC 205 TTh 8­10:05 a STATISTICS/BE HAVIORAL SCIENCES 70942­70943 Home Page Content Take Test: Homework 3 Test Information Description Instructions Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed later. Save All Answers Save andSubmit Find the estimated standard error for the sample mean for n = 4 with SS = 48 Report a whole number QUESTI ON 1 1 points Saved Find the estimated standard error for the sample mean for n = 6 with SS = 270 Report a whole number QUESTI ON 2 1 points Saved Find the estimated standard error for the sample mean for n = 12 with SS = 132 Report a whole number QUESTI ON 3 1 points Saved Find the critical t values for a two-tailed test with α = .05 for each of the following sample sizes: ­ n = 6 ­ n = 12 ­ n = 24 ­ n = 30 I. t* = +/­ 1.699 II. t* = +/­ 1.714 III. t* = +/­ 1.796 IV. t* = +/­ 2.015 V. t* = +/­ 2.042 VI. t* = +/­ 2.045 VII. t* = +/­ 2.064 VIII. t* = +/­ 2.069 IX. t* = +/­ 2.179 X. t* = +/­ 2.201 XI. t* = +/­ 2.447 XII. t* +/­ 2.571 QUESTI ON 4 4 points Save Answer Find the critical t values (t*) for a one-tailed test with α = .01 for each of the following sample sizes: ­ n = 7, upper tail ­ n = 13, lower tail ­ n = 22, upper tail ­ n = 31, lower tail A. t* = +/­ 2.457 B. t* = ­2.457 C. t* = 2.457 D. t* = +/­ 2.518 E. t* = ­2.518 F. t* = 2.518 QUESTI ON 5 4 points Save Answer 1 points Save Answer Question Completion Status: Dashboard For Students Content Collection Get Help Alejandra Reyna Quick Links

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11/13/2016 Take Test: Homework 3 – 2016 Fall PSYC/SOC 205 TTh 8­10... ... 2/17 G. t* = +/­ 2.681 H. t* = ­2.681 I. t* = 2.681 J. t* = +/­ 3.143 K. t* = ­3.143 L. t* = 3.143 A randomsample of n = 25 individuals is selected froma population with μ = 20, and a treatment is administered to each individual in the sample. After treatment, the sample mean is found to be M = 22.2 with SS = 384. How much difference is there between the mean for the treated sample and the mean for the original population? (Note: In a hypothesis test, this value forms the numerator of the t statistic.) Report answer to the tenths place i.e. 10.5 QUESTI ON 6 A random sample of n = 25 individuals is selected from a population with μ = 20, and a treatment is administered to each individual in the sample. After treatment, the sample mean is found to be M = 22.2 with SS = 384. If there is no treatment effect, how much difference is expected between the sample mean and its population mean? That is, find the estimated standard error. (Note: In a hypothesis test, this value is the denominator of the t statistic.) Report answer to the tenths place QUESTI ON 7 1 points Save Answer To evaluate the effect of a treatment, a sample is obtained from a population with a mean of μ= 30, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M = 31.3 with a standard deviation of s = 3. The sample consists of n = 16 individuals, and this is a two tail test using α = .05.
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