The actual proportion of voters who plan to vote for a particular proposition in the next election is 70%, but Joe does not know this. Joe has been hired by the election campaign to conduct a sample survey to estimate the proportion of voters who will vote for the proposition. Joe decides to take a random sample of size 121 from all eligible voters. 1. Give the expected value of . Note that you do not have enough information to calculate the 푝

Does the point (1, sqrt 7) lie on circle shown.

Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?