A baseball is thrown upward, and its height measured at 0.5-second intervals using a strobe light. The resulting data are given the table. (Let y be the height of the baseball in ft and x the time in seconds since it is thrown.) Time (s) Height (ft) 4.2 0.5 26.1 1.0 40.1 1.5 46.0 2.0 43.9 2.5 33.7 3.0 15.8 (a) Draw a scatter plot of the data. y 70 60 5of 40 50 40 30 30 20 20 10 10 y 70 50 60 40 50 30 40 30 20 10 20 10 2 3 O-1 What degree polynomial is appropriate for modeling the data? (b) Find a polynomial model that best fits the data. (Round all numerical values to three decimal places.)

A driver of a car stopped at a gas station to fill up his gas tank. He looked at his watch, and the time read exactly 3:40 p.m. At this time, he started pumping gas into the tank. At exactly 3:44, the tank was full and he noticed that he had pumped 10.7 gallons. What is the average rate of flow of the gasoline into the gas tank?

For these data, make a frequency table and calculate the average

A farmer in Indiana wants to examine the relation between the number of very hot days (days when the high temperature exceeds 95° F) and the corn production of his farm (in bushels of corn per acre). He looks at the data for 10 summers. Let x¡ = the number of hot days during the ith summer. %3D = the corn production (in bushels per acre) during the ih summer. Let yi The data are in the table below:. 4 6. 7 8. 9. 10 i 2 14 10 7. 8. 1 12 Xi Yi 95 80 83 87 88 85 99 102 79 95 a) Make a scatterplot of the data. b) Examine your scatterplot and, without performing any calculations, EXPLAIN whether you expect the correlation coefficient to be closer to -1, 0, or 1 and WHY. c) Find the sample mean and standard deviation for each variable. %3D %3D S. %3D y d) Place an asterisk on your scatterplot at the point (x,ỹ).

%23 34.152 is an approx number. The no. is correct up to five significant digits Find the upper Limit for Ihe relative error.

Estimate the rate ratio for postmenopausal vs. premenopausal women after controlling for age. (Round your answer to two decimal places.)   Provide a 95% CI for the rate ratio. (Enter your answer using interval notation. Round your numerical values to two decimal places.)

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Suppose that 7 male students take a survey and are asked for their height (in inches) and their shoe size.  The results are below.                           height              72        70        68        67        76        69        67                         shoe size          11        10        10          9        13        11        10             a.) Fill in for height only.  No work needs shown.  Use 2 decimal places.   x̅ = __________          median = __________            s =  __________             b.) Construct (hand-draw) a scatterplot of the data above, assuming you are using height to try to predict shoe size.        c.) Interpret in words for this problem what you are seeing on your graph.  Specifically, mention if you think there may be a relationship between height and shoe size, and explain why or why not. ______________________________________________________________________________

An aerabk exercise instructor remembars the data givan in the follawing table, which shows the recommanded maximum exercise haart rates for individuals of the given ages. (A graphing calculator is recommended.) Age (x years) 20 40 60 Maximum heart rate 172 155 138 (y bente per minute) (a) Find the lincar corelation coefficient for the deta. (Rcund your answer to two decimal places.) (b) What is the signiticance of the value found in part (a)? O The slope of the regression is about half of what the expected value is. O The graph of the regression points passes through nene of the data points. * The graph of the regression points passes through all three data peints. O One of the data points is the y-intercept. O The linear correlation cooficient should always be positive. (c) Find the equetion of the leest-squeres regression line. (Round your answers to two decimal pleces.) (d) Use the equation of the least-squares line from part (c] te predict the maximum cxercise heart rate fer a…

Text | Scho x S Schoology Jefferson County S RATIOS | Schoc A web.kamihq.com/web/viewer.html?state=%7B"ids"%3A%5B"1W5g1rQ-UPKTWZ08-pHJ3NwnRJX-OCVE C Log in to Clever G how do chimpanze. G when did alice coac. G what black inventor.. 6 Pro du A Kami Schoolo. Riley Hall - RCMO6_NA_SW_U03_L12 Full Lesson_FIILL pdf Model It > Complete the problems about ratio relationships. The Spanish Club is having a party. They plan to serve 6 tacos for every 3 guests. a. Complete the model to show this ratio relationship. Tacos DISC Guests Ask: How model sho b. Use ratio language to write two different sentences that compare relationshi numbers of tacos and guests. the numbe and the nu guests? Share:I co the ratio rel c. Ju-long says that there will be 2 tacos for every 1 guest. Use your model to help explain why Ju-long is correct. to find the n of tacos the needs by Reflect Explain how the ratios 5 tacos for every 2 guests and 2 tacos for every 5 quests are different. Include a model in your…