Critical z value

Related BrainMass Solutions

• Finding test statistics and critical values for one proportion z

  Use the critical-value approach.

• Critical Value and Z Statistic

  507513 Critical Value and Z Statistic Use the critical values for z of 1.65 and a p level of approximately 0.10, or 10%.

• Hypothesis Testing of Mean

  the null hypothesis Conclusion: Reject the null hypothesis, since the calculated value of is greater than the critical value of Z.

• Statistics : Hypothesis Testing, Test Statistic and Critical Region

  The critical region in hypothesis testing is determined by the critical value. For example, we choose Z-test to test if the population mean mu=a. Given a significance level alpha=0.05, we know the critical value is z=1.96.

• Estimating critical value of a right-tailed hypothesis test

  To find the lower critical value, the negative z-value is used, to find the upper critical value, the positive z-value is used. Use this approximation to estimate the critical value of a right-tailed hypothesis test with n=132 and alpha=0.01.

• Inferring about population Means

  Since observed value of Z lies between critical value.

• Testing of hypothesis

  To find the lower critical value, the negative z-value is used, to find the upper critical value, the positive z-value is used.

• 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

• 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

• Z-Test and Critical Values

  A z score beyond which 7% of the data fall in each tail a. We will not be able to reject the null hypothesis because z test statistics (1.06) value lies between critical values that is -1.96 and 1.96. b.