This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview:  1  BUAD 310 InClass Practice for Quiz 2 3/1/10 1. a) Determine the pvalue for H : p = 0.5 versus H a : p > 0.5 when n = 225 and ˆ p = 0.55. b) For a test with a significance level of = 0.10, what would you decide? c) What if the alternative hypothesis had been twosided? Now what is the pvalue? d) What is your decision for the twosided test? 2. Customers of a company were surveyed as to whether they were satisfied with the service they received. A sample of 2,000 customers yielded ˆ p = 0.60 (proportion of customers satisfied with service in the sample.) What is the standard error of the sample proportion of customers satisfied with service? 3. A recent study conducted by the state government attempts to determine whether the voting public supports further increase in cigarette taxes. If the proportion in favor is at least twothirds (or 0.67), the government will add some legislation to the next ballot. The opinion poll recently sampled 1500 voting age citizens and 1020 of the sampled citizens were in favor of an increase in...
View
Full Document
 Spring '07
 Lv
 Business, Statistics, Government, Normal Distribution, Null hypothesis, Statistical hypothesis testing, percent confidence interval

Click to edit the document details