Alumber company is making boards that are 2867.02867.0 millimeters tall. if the boards are too long they must be trimmed, and if the boards are too short they cannot be used. a sample of 2525 is made, and it is found that they have a mean of 2865.82865.8 millimeters with a standard deviation of 8.08.0. a level of significance of 0.050.05 will be used to determine if the boards are either too long or too short. assume the population distribution is approximately normal. find the value of the test statistic. round your answer to three decimal places.

What is always true about a positive integer raised to a negative odd power?

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?

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.