Question
A company advertises that by using their SAT math prep class, students can increase their score by at least 50 points, A teacher is skeptical
A company advertises that by using their SAT math prep class, students can increase their score by at least 50 points, A teacher is skeptical of this claim. Supposerepresents the actual mean increase in math SAT scores of the population who have used the method and assume the distribution of their scores is approximately normal. The teacher collects a data sample of 16 students who took the class to see if the claim is true. The mean increase of scores is 45 points with a standard deviation of 20 points. Is this data enough evidence that the mean improvement is less than 50 points?
H0: = 50
H1:A< 50
What are the appropriate degrees of freedom for this test?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started