The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 20 students in a beginning computer-science course. The results were as follows. x 5 17 21 12 23 22 16 19 18 17 19 16 7 7 4 19 19 12 20 15 y 19 19 24 36 27 26 25 28 17 27 21 24 18 18 14 28 21 22 20 21 (a) Find the equation of the line of best fit. (Round your slope to four decimal places and your y-intercept to three decimal places.) Y (with ^ above it) = __________ + __________x (b) Find Se2 (Second Power) . (Round your answer to two decimal places.)

Name 3) The Tire Rack, an online distributor of tires and wheels, conducts extensive testing to provide customers with products that are right for their vehicle, driving style, and driving conditions. In addition, the Tire Rack maintains an independent customer survey to help drivers help each other by sharing their long-term tire experiences (The Tire Rack website, August 1, 2016). The following data shows survey results (one to 10 scale with 10 being the highest rating) for 18 high performance all season tires. The variable tread wear rates quickness of wear based on drivers expectations, the variability dry traction rates the grip of a tire on a dry road, the variable steering rates the tires steering responsiveness, and the variable buy again rates the driver's desire to purchase the same tire again. Tire Sumitomo HTR A/S PO2 Goodyear Eagle Sport All-Season Michelin Pilot Sport A/S 3 Kumho Ecsta PA 31 Firestone Firehawk Wide Oval AS BFGoodrich g-Force Super Sport A/S Yokohama AVID…

th Last year over 8000 students took an entrance exam at a certain state university. Tom's score was at the 55 percentile. Leila's score was at the 86 percentile. (a) Which of the following must be true about Tom's and Leila's scores? O Tom scored higher than Leila. O Both Tom and Leila scored higher than the median. O Leila answered 31 more questions correctly than Tom. O Tom's and Leila's scores were both in the bottom half of all scores. (b) Which of the following must be true about Tom's score? O Tom scored lower than about 55% of the students who took the exam. O Tom got about 55% of the questions correct. Tom scored higher than about 55% of the students who took the exam. Tom got about 55% of the questions wrong. Submit Assignme Continue iert 144 %23 4. 6. 8 R Y U H K L A. D paus V. B M alt ctri alt USE YOUR Dew de LL

Please answer all the questions in literal b

You collect data on number of hours spent studying, on average, throughout the Fall 2019 semester for all Stonehill students. You have a colleague at the College of the Holy Cross in Worcester, MA who collects the same data at Holy Cross. You want to compare the average number of hours spent studying during the Fall 2019 semester for male students at Stonehill, female students at Stonehill, male students at Holy Cross and female students at Holy Cross. Which statistical test would you use to compare the students at Stonehill and Holy Cross to look for significant differences in study time? a. one sample t test b. two sample t test c. repeated measures t test  d. ANOVA

Q6

please help me solve this question using excel

Suppose you have collected data on 1000 customers who visited your company's website last week. For each customer, the time spent on the page and the total amount of customer purchases during the visit were recorded. You want to explore the relationship between these two variables. What is the explanatory variable and what is the response variable? to. Explanatory: Time spent on the page Answer: Total amount of purchases b. It is not possible since neither explains c. Answer: Time spent on the page Explanatory: Total amount of purchases

Frank’s Furniture employees earned the following amounts last week:         $351.96    $195.35    $219.93    $492.35    $544.40         $250.90    $363.64    $455.08    $286.12 What is the IQR for this data set?

Question content area top Part 1 Assume that when human resource managers are randomly​ selected, 41​% say job applicants should follow up within two weeks. If 8 human resource managers are randomly selected, find the probability that at least 3 of them say job applicants should follow up within two weeks.