Please help me find the slope and explain what the slope represents

write the equation of the line

what does the y-intercept represent

using the equation calculated the length of the spring when 15 ib. of the weight is attached

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.