What's wrong with the figure below?

Please explain

Part 4 please

The table shows the number of hours 9 students spent studying for a test and their scores on that test. What would be the predictable score when a student studied for 4.5 hours? Hours spent studying, x 0 2 4 5 5 5 6 7 8 Test scores, y 40 51 64 69 73 75 93 90 95 A. 67 B. 68 C. 69 D. 71

CHART ATTACHED. PLEASE USE EXCEL FORMULAS FOR ME TO FOLLOW WHEN APPLICABLE   The Standard Issue Test Prep company offers an ACT prep course designed to help students improve their scores on the ACT exam.  A mock exam is given at the beginning of the course to see where students are starting from.  A sample of 27 students' scores are taken and given below:       Using this data, answer questions below.  CAUTION!  If you are using your calculator for Parts A and B, double-check that you entered the data in your calculator correctly.  One minor mistake in data entry can lead to a drastically different answer!   Find the mean: ___________________.  Round your answer appropriately. Find the standard deviation: ___________________.  Round your answer appropriately.   Assuming the population is normally distributed, construct a 95% confidence interval for the mean mock exam.  Show all relevant work and follow these expectations: Your work should be easy to read and follow.  Use…

Below is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4   What is the missing value under the (X-MX)2 column?