No one will
a random sample of students from the seventh and eighth grades are asked whether they walk to school. the results of this survey are shown in the table.

student grade walks?
1 7 y
2 7 n
3 8 n
4 8 n
5 8 n
6 7 y
7 8 y
8 8 n
9 7 n
10 7 n
enter numbers in the boxes so that the two-way table represents these results.
walk to school?

yes no
grade 7

grade 8

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

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.

Given right triangle abc, what is the value of tan(a)?