For a one-tailed hypothesis test (upper tail) the p-value is computed to be 0.034. If the test is being conducted at 95% confidence, the null hypothesis is rejected.
In a test of hypothesis, the null hypothesis is that the population mean is equal to 90 and the alternative hypothesis is that the population mean is not equal to 90. Suppose we make the test at the 10% significance level. A sample of 100 elements selected from this population produces a mean of 84 and a standard deviation of 8. What is the value of the test statistic, z?
