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Complete: Chapter 3 Problem Set A school district is deciding whether or not to adopt a new reading curriculum. Three classrooms are randomly selected as test sites for the curriculum. To obtain a measure of student improvement, students in the three classrooms are tested on their vocabulary before and after the curriculum is implemented. The vocabulary test has 25 possible points. The post-implementation scores for the students in the third classroom are shown in the following table: 19 13 16 18 15 14 17 8 20 19 22 11 Calculate the sample size, $n$; the total sum, $\sum X$; and the sample mean, $M$. n = $\sum X$ = M = The school district decides it will be easier to understand the scores if they are converted to a 100-point scale. This requires that each score be multiplied by 4. Calculate the new $n$, $\sum X$, and $M$. n $\sum X$ = M =

          Complete: Chapter 3 Problem Set
A school district is deciding whether or not to adopt a new reading curriculum. Three classrooms are randomly selected as test sites for the curriculum.
To obtain a measure of student improvement, students in the three classrooms are tested on their vocabulary before and after the curriculum is
implemented.
The vocabulary test has 25 possible points. The post-implementation scores for the students in the third classroom are shown in the following table:
19 13 16 18 15 14 17 8 20 19 22 11
Calculate the sample size, $n$; the total sum, $\sum X$; and the sample mean, $M$.
n = 
$\sum X$ = 
M = 
The school district decides it will be easier to understand the scores if they are converted to a 100-point scale. This requires that each score be
multiplied by 4.
Calculate the new $n$, $\sum X$, and $M$.
n
$\sum X$ = 
M =

Complete: Chapter 3 Problem Set
A school district is deciding whether or not to adopt a new reading curriculum. Three classrooms are randomly selected as test sites for the curriculum.
To obtain a measure of student improvement, students in the three classrooms are tested on their vocabulary before and after the curriculum is
implemented.
The vocabulary test has 25 possible points. The post-implementation scores for the students in the third classroom are shown in the following table:
19 13 16 18 15 14 17 8 20 19 22 11
Calculate the sample size, n; the total sum, ∑ X; and the sample mean, M.
n =
∑ X =
M =
The school district decides it will be easier to understand the scores if they are converted to a 100-point scale. This requires that each score be
multiplied by 4.
Calculate the new n, ∑ X, and M.
n
∑ X =
M =

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