10. From earlier studies, it is believed that the percentage of students favoring a four-day school week during May and June of every school year is approximately 85%. What is the minimum sample size that will create a margin of error of 2% with 90% confidence? (A) 79 (B) 93 (C) 146 (0)541 (E) 863 As the degrees of freedom increase, the t-distribution . (approaches the binomial distribution, exceeds the normal distribution, approaches the 2 distribution, becomes more positively skewed) We commit a Type II error when we the null hypothesis when it is actually false. The probability of committing a Type I error is equal to the The . Based on the sample information, is used to determine whether to reject the null hypothesis. To conduct a test of proportions, the value of up and n(1 - p) must be at least (1, 5, 30, 1000). The value separates the region where the null hypothesis is rejected from the region where it is not rejected. When conducting a test of hypothesis for means (assuming a normal population), we use the standard normal distribution when the population is known. In a -tailed test, the significance level is divided equally between the two tails. (one, two, neither). The is the opposite ofthe alternative hypothesis, and will always include equality