Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. based on data from the administrator of the exam, scores are normally distributed with mu equals516. the teacher obtains a random sample of 2000 students, puts them through the review class, and finds that the mean math score of the 2000 students is 521 with a standard deviation of 111. complete parts (a) through (d) below. a) state the null and alternative hypothesis. let u be the mean score.

Null hypothesis :

Alternate hypothesis :

Step-by-step explanation:

Given :

To Find :  State the null and alternative hypothesis.

Solution:

We are given that A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam.

So, claim is increase in he scores of students on the math portion of a college entrance exam.

So,

Null hypothesis :

Alternate hypothesis :

answer: 32.68

step-by-step explanation:

x=2

step-by-step explanation:

10.50 + taxes which added up to 11.50