1) Using the tdist function, calculate exact p-values for a two tailed test for the following...

1) Using the tdist function, calculate exact p-values for a two tailed test for the following test statistics (6 points)

a) 2.14, df = 79 (2 points) b) 3.68, df = 13 (2 points) c) 1.78, df = 117 (2 points)

Expert Solution

milcah answered 1 year ago

1a For the following degrees of freedom, list the critical values for a two-tailed test at...

1a For the following degrees of freedom, list the critical values for a two-tailed test at a .01, .05, and .10 level of significance. .01 .05 .10 df = 8 ___ ___ ___ df = 20 ___ ___ ___ df = 40 ___ ___ ___ df = 120 ___ ___ ___ b. As the level of significance increases (from .01 to .10), does the critical value increase or decrease? c. As the degrees of freedom...

state the critical values for a two-independent same t-test given the following conditions: a. two-tailed test...

state the critical values for a two-independent same t-test given the following conditions: a. two-tailed test a=.01, total df=26 b. one-tailed test, lower tail critical a=.01,df=15 for each group c. two- tailed test, a=.05, n=12 in each group d.one-tailed test, upper tail critical, a=.05 n for both groups combined is 30

Using the z table, determine the critical values for a two-tailed test when α = 0.03....

Using the z table, determine the critical values for a two-tailed test when α = 0.03. A)±2.17B)±0.06C)±0.18D)±1.88

If the estimated Z is 1.48, the p-value for a two-tailed test is

Consider using a one-tailed as well as a two-tailed test of a null hypothesis regard- ing...

Consider using a one-tailed as well as a two-tailed test of a null hypothesis regard- ing an estimated regression coefficient. For the same significance level, which test is more stringent? In other words, for which test does rejection of the null hypothesis automatically imply rejection in the other test as well, but not vice versa? Explain.

Q1. Define/outline the following: a. the difference between a ‘one-tailed test’ and a ‘two-tailed test’. b....

Q1. Define/outline the following: a. the difference between a ‘one-tailed test’ and a ‘two-tailed test’. b. the importance of sample size in the context of OLS regression. *c. four different types of data structures and discuss their potential usefulness and application in finance. d. the OLS assumptions e. Correlation is not causation. Briefly discuss. (c. is the part I'm confused most about)

Identify the critical z values and the rejection region of the following: a) Right-tailed test with...

Identify the critical z values and the rejection region of the following: a) Right-tailed test with a = 0.05 b) Left-tailed test with a = 0.025 c) Two-tailed test with a = 0.01 d) a = 0.10 with HA : p < 0.26

1. Why would a researcher need to use a two-tailed test vs. a one-tailed test? 2.A...

1. Why would a researcher need to use a two-tailed test vs. a one-tailed test? 2.A scholar tests the following hypothesis: Females have a greater number of delinquent peers than males. In her test, she calculates a t value is -2.349. Why would it be unnecessary to compare this test statistic to a critical t value?

What is the p-value of a two-tailed one-mean hypothesis test, with a test statistic of z0=0.27?...

What is the p-value of a two-tailed one-mean hypothesis test, with a test statistic of z0=0.27? (Do not round your answer; compute your answer using a value from the table below.) z0.10.20.30.40.50.000.5400.5790.6180.6550.6910.010.5440.5830.6220.6590.6950.020.5480.5870.6260.6630.6980.030.5520.5910.6290.6660.7020.040.5560.5950.6330.6700.7050.050.5600.5990.6370.6740.7090.060.5640.6030.6410.6770.7120.070.5670.6060.6440.6810.7160.080.5710.6100.6480.6840.7190.090.5750.6140.6520.6880.722

1) For a two-tailed hypothesis using a z-distribution, find the critical values (z-scores) that will give...

1) For a two-tailed hypothesis using a z-distribution, find the critical values (z-scores) that will give you a critical region with an alpha of the following values: a) alpha = 0.20 b) alpha = 0.10 c) alpha = 0.05 d) alpha = 0.01 e) alpha = 0.001 2) For a one-tailed hypothesis using a z-distribution, find the critical value (z-score) that will give you a critical region with an alpha of the following values: a) alpha = 0.20 b) alpha...

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