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- .oving Straight Ahead Problem 1.1 Jack, Jill and Julia were swimming in a swim-a-thon. Each child's swimming rate is listed below. Jack- 3 laps per minute Jill- 4 laps per minute = rate Julia- 5 laps per minute 1. Complete the table below to show how many laps each person can complete in the given time. メ Time (minutes) Jill's Julia's Jack's Laps Laps Laps 2 6. 16 3 12 15 20 25 4 12 16 15 20 = laps 2. How is each person's swimming rate used in their part of the table? Think about where the swimming rate shows up in the table. the X Valve Minuie. Per 3. Write an equation for each person that they could use to determine the number of laps that they could swim in any number of minutes. | How is each person's swimming rate used in their equation?can i get solution for d and aboveProblem 2 Consider the following set of data points: (-1,2), (0,1) (1,3), (2, 4). 1. Find the line of best fit and the corresponding least square error. 2. Find the parabola of best fit and the corresponding least square error. 3. Which one of the two approximations is a better fit?
- 1a. Make a scatter plot of the table provided in the image. B. Write a linear/exponential equation that models this table provided in the image. C. Explain what the slope/multiplier means in the context of the problem. E. Use your model to predict when there will be 100 new cases (I have already done question 1a and have included it in my images. I mainly need help with questions C, D, and E)The teacher from Problem 21 also tried a different approach to determining whether changing answers helps or hurts exam grades. In another class, students were told to review their final exams and change any answers they wanted to before turning them in. However, the students had to indicate both the original answer and the changed answer for each question. The teacher graded each exam twice, once using the set of original answers and once with the changes. In the class of n- 22 students, the exam scores improved by an average of MD - 2.5 points with the changed answers. The standard deviation for the difference scores was s = 3.1. Are the data sufficient to conclude that rethinking and changing answers can significantly improve scores? Use a one-tailed test at the .01 level of significance. (1) Ho: [ Select ] [ Select ] [ Select ] H1: Select ) [ Select ] [ Select ] (2) a - [ Select ] df - [ Select J Critical region boundary/boundaries: [ Select ] [ Select ] (3) Estimated Standard…The speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 70% of the cases. Suppose the 15 cases reported today are representative of all complaints. pctune Click here for the Excel Data File a-1. How many of the problems would you expect to be resolved today? (Round your answer to 2 decimal places.) Nomber of Problems 0-2. What is the standard deviation? (Round your answer to 4 decimal places.) Standerd Devistion b. What is the probability 9 of the problems can be resolved today? (Round your answer to 4 decimel places.) Probebility Next of 10 Prev Et ere to search
- For questions 4 and 5, determine whether the study is observational or an experiment. If the study is an experiment, identify the control and treatment groups, and whether blinding is needed. If the study is observational, state whether it is a case-control study, and if so, identify the cases and controls. There is a suspicion that zinc oxide, the white non-absorbent sunscreen traditionally worn by lifeguards, is more effective at preventing sunburns that lead to skin cancer than absorbent sunscreen lotions. A case-control study was conducted to investigate if exposure to zinc oxide is a more effective skin cancer prevention measure. The study involved comparing a group of former lifeguards that had developed cancer on their cheeks and noses (cases) to a group of lifeguards without this type of cancer (controls) and assess their prior exposure to zinc oxide or absorbent sunscreen lotions.For each of the following problems, which subtraction model take away, missing addend, comparison, or measurement corresponds best to that problem? (a) Ivan solved 18 problems and Andreas solved 13 problems. How many more problems has Ivan solved than Andreas? (b) On Malea's 12-mile hike to Mirror Lake, she came to a sign that said she had 5 miles left to reach the lake. How far has Malea walked so far 2.) In an attempt to do a three-digit subtraction, Yuan writes 706 -327 421 (a) Identify what she is doing incorrectly. (b) How will you help correct her errorActivity no.5 Solve the following problems. ( WEEK NO. 12) 1. Find the perimeter of the square whose sides measures 2x + 3 units. 2. Find the Area of the square whose sides measure 3x+2 units. 3. What is the Area of a rectangle whose sides measure 3x+4 units and 5x - 2 units?
- Please help me with solutions to these questions.Many times property value appraisers estimate the value of specific properties with minor or sometimes major difference. A company that builds apartment buildings in Athens considers two appraisers, A and B. who give an estimate of the sale price of their apartments. The sales department of the company has observed that in most cases appraiser A gives smaller value estimates of their apartments. The company would like to know if this is true for estimated values of apartments of other companies. Let X₁ be the appraisal value of an apartment of other companies by appraiser A. Let X2 be the appraisal value of an apartment of other companies by appraiser B. Also, let D=X₂-X₁. The company selected a random sample of apartments of other companies. Let be the appraisal value of each apartment in the sample by appraiser A. Let *2 be the appraisal value of each apartment in the sample by appraiser B. The measurements and *2 are in thousands of euros and are given below. Let d=x₂-x. At the 5%…Students in 5 different 2nd grade classes are timed to see how long it takes to correctly answer 50 addition and subtraction problems. Each class was then taught a different strategy for basic arithmetic for one month. After the month, the students were again timed to see how long it takes to correctly answer 50 similar problems. The dot plots below show the differences in times for the students (difference after before) for each of the five classes. Which dot plot appears to indicate an improvement in time for the class? A B C D 3 -4 000 · goods goxxcomm 0 ... 8.00 88 888 8 8 8 8 。 8 88 000 0 80 800 -2 0 8 01 cooo 2 08 우 O O +-000 8 08...8.... 0 800 6 8 00 10 12