Critical Value and Z Statistic

Related BrainMass Solutions

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

  x = 610, n = 1500, H0: p≤ 0.40, Ha: p > 0.40, α = 0.01 z = 0.53; critical value = 2.33; do not reject H0 z = 0.62; critical value = 2.575; reject H0 z = 0.62; critical value = 2.33; do not reject H0 z = 0.53; critical

• Statistics : Hypothesis Testing, Test Statistic and Critical Region

  For example, when we do a two-tailed test and choose a Z-statistic, then given a significance level alpha=0.05, we can find the critical value is 1.96, given alpha=0.10, the corresponding critical value is 1.645.

• Finding test statistics and critical values for one proportion z

  For the given sample data and null hypothesis, compute the value of the test statistic, z = Out of 187 observations, 57% were successes.

• The Difference Between The t And z Statistic

  594209 The Difference Between The t And z Statistic If the Z statistic (critical value) is used in lieu of the t statistic when comparing two means from independent populations using small samples, would probability of rejecting the null hypothesis increase

• 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

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

  Instructional aid on how to determine the value of the test statistic, the p-value, and the critical value is given.

• Finding statistic, critical value and p value: Example problem

  Determine the test statistic, critical value z = + or -, determine the p value. Find statistic, critical value and p value Suppose a study is constructed to test a claim, at a 0.05 significance level that a population proportion is 40%.

• One sample Z test for proportion

  Decision Rule: Reject the null hypothesis, if the value of test statistic is greater than the critical value. Fails to reject the null hypothesis as the value of test statistic |Z| is not greater than the critical value.

• Hypothesis Testing of Mean & Proportion

  getting a sample statistic at least as extreme as z= -0.8767, and interpret this probability value.

• Hypothesis Testing of Mean

  =.05 and 0.01? Indicate which test you are performing; show the hypotheses, the test statistic and the critical values and mention whether one-tailed or two-tailed. Please see the attachments.