Z-Statistic, T-Statistic and P-value

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• t-statistic as opposed to a z-statistic for small test samples

  When you compute p-value when you test some hypotheses, use the t-statistic table NOT the z-statistic table, you will get a bigger p-value which means that the Null hypothesis is less likely to be rejected. Thank you for using Brainmass.

• Find critical value and test statistic for some t test questions

  For the given sample data and null hypothesis, compute the value of the test statistic, z = p-p0/(squareroot)p0(1-p0)/n Out of 69 observations, 67% were successes.

• Statistics : Hypothesis Testing, Test Statistic and Critical Region

  Once we know the distribution of a test statistic, then given a significance level alpha, we can determine a value z or t(which we call a critical value) such that the probability P(Z>z) or P(T>t) is alpha when we do a one-tailed test.

• T-statistics, P-Values, and Hypothesis Testing

  Determine the p-value; and at 93.7% confidence, test the above hypotheses. The p-value=P(Z<-z) =P(Z<-1.8) =0.0359 Since the p-value=0.0359<0.063, we should reject the null hypothesis H0. c.

• P-value and its' relationship to Z-test and T-test

  325213 P-value and its' relationship to Z-test and T-test What is the P-value and what is its' relationship to the Z-test and the T-test?

• Hypothesis Testing Using Normal Distribution

  7512 Intermediate Calculations Standard Error of the Mean 32.1861 Z Test Statistic 1.926295206 Two-Tail Test Lower Critical Value -1.959963985 Upper Critical Value 1.959963985 p-Value

• Statistics : T-Distribution, Z-Distribution and p-Values

  Say we have a test statistic of 1.50. We can plug in our numbers to compare how a z-distribution will look compared to a t-distribution. For Tables 1 click on two-tail, and then type in 1.50 for your z-value.

• Hypothesis testing using either t or normal distribution

  What is the p-value? (Round your answer to 4 decimal places.) p-value=P(Z>8.24)=0.0000 3.

• Statistics Concepts: Cases and Observations

  What percentage of area (or cases or observations) is found above a z value of 1.96? ._____ (2 Points) The answer is P(Z>1.96)= 0.025 You can use z-table to find P(Z>1.96)=0.025. 16.