Find the value of z_0 for the standard normal variable Z that satisfies each of the following statement. (If you use Table A, report the value of z_0 that comes closest to satisfying the condition). In each case, sketch a standard normal curve with your value of z_0 marked on the axis and shade the relevant area under the curve.

a. 32% of the observations fall below z_0
b. 42% of the observations fall above z_0
c. 95% of the observations fall between -z_0 and z_0
d. 98% of the observations fall between -z_0 and z_0

The null and alternate hypotheses are: h0: μ1 ≤ μ2 h1: μ1 > μ2 a random sample of 22 items from the first population showed a mean of 113 and a standard deviation of 12. a sample of 16 items for the second population showed a mean of 99 and a standard deviation of 6. use the 0.01 significant level. find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) state the decision rule for 0.010 significance level. (round your answer to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? use the 0.01 significance level.