Asimple linear regression analysis was conducted to predict the exam 3 score of students in sta 2023 based on their exam 1 score. the analysis yielded the following results:
y-^ = 50.57+0.4845x.
1. which of the following is the best description of the slope of the line?
group of answer choices:
o as the exam1 score increases by 1 point, the student's exam 3 grade will increase, on average, by 0.4845 points.
o as the exam 1 score increases by 1 point, the student's exam 3 grade will increase, on average, by 50.57 points.
o as the exam 3 score increases by 1 point, the student's exam 1 score will increase, on average by 0.4845 points.
o as the exam 3 score increases by 1 point, the student's exam 1 score will increase, on average by 50.57 points.

Asequence has a common ratio of and f(5) = 81. which explicit formula represents the sequence? f(x) = 24 f(x) = 16 f(x) = 24 f(x) = 16

Fiona has to plot a histogram of the given data

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10