Aresearcher studies the average distance that 130 people living in u. s. urban areas walk each week.
a. what is the size of the sample?
b. identify the population.
c. is this "average" a descriptive statistic or an inferential statistic if it is used to describe the 130 people studied?
d. how might you operationalize the average distance walked in 1 week as an ordinal measure?
e. how might you operationalize the average distance walked in 1 week as a scale measure? nolan, susan; heinzen, thomas. essentials of statistics for the behavioral sciences (page 16). worth publishers. kindle edition.

What is the prime factorization of 230

Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).