4. The function f(x)=0.03x-1.15x² +18x+433 models the data in the bar graph shown below.U.S. math SAT scores as a function of household income.600528 538 542 550 554500 457 475 497 51240030020010000-24-68-1012-1416-20Family income ($10,000's)a) Find f(7) and interpret (write a sentence explaining what your result means).b) Does the function provide a reasonable estimate for f(7)?c) Does the function provide a reasonable estimate for f(100)? Explain.Math SAT

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Answered: U.S. math SAT scores as a function of…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Fill in the blank.A sample of five households is selected, and the size of each household is recorded. If the median size is 3 and the mode is 5, the mean is _______.(Give your answer to one decimal place.)
Q3A The table below contains on 48 houses: the value of the house and the amount of rental income in a year that the house brings in ("Capital and rental," 2013). Table: Data of House Value versus Rental Value Rental Value Rental Value Rental Value Rental 81000 6656 77000 4576 75000 7280 67500 6864 95000 7904 94000 8736 90000 6240 85000 7072 121000 12064 115000 7904 110000 7072 104000 7904 135000 8320 130000 9776 126000 6240 125000 7904 145000 8320 140000 9568 140000 9152 135000 7488 165000 13312 165000 8528 155000 7488 148000 8320 178000 11856 174000 10400 170000 9568 170000 12688 200000 12272 200000 10608 194000 11232 190000 8320 214000 8528 208000 10400 200000 10400 200000 8320 240000 10192 240000 12064 240000 11648 225000 12480 289000 11648 270000 12896 262000 10192…
The table gives some information about the delays (in minutes) of 80 flights. Delay (n minutes) Frequency Cumulative frequency 10 - 19 16 16 20 - 29 26 42 30 - 39 23 40 - 49 10 75 50 - 59 5 80 The number of flights which delayed 39 minutes or less than 39 minutes is:65 flights. true false
P-Value Find the P-value in a test of the claim that the mean annual income of a nurse is greater than $60,000 (based on data from the Bureau of Labor Statistics) given that the test statistic is t = 2.462 for a sample of 30 nurses.
Basketball Scores In a Physical Education (P.E) class, the teacher wanted to work on basketball skills and game development over a five week period. The P.E. teacher prepared a table showing the points scored by five players during this time. 1. What is the value of x? II. What is the value of y? Ben Sienna Dexter Avi Rayner Range Game 1 4 8 5 8 12 8 Game 2 11 13 8 13 16 8 Game 3 9 4 6 5 25 21 Game 4 7 16 13 20 4 Game 5 14 10 3 17 23 20 Mean for student 9 X 7 12.6 16
A data set includes cholesterol levels for heart attack patients and for a group of control patients. It is recommended that people try to keep their cholesterol level below 200. The following Minitab output is for the control patients. Test of mu = 200.00 vs. mu < 200.00 Variable N Mean StDev SE Mean T P control 60 194.98 23.4 3.02 -1.66 0.051
q4
Using the chart analysis, find the intervals of increase and decrease of ?(?) and find the local maximum and minimum value(s) of ?(?).find the sample chart below
The mean of the population _______________, is equal to, greater to, or less to the mean of the sample means, _______________. C.) Does the sample means target the value of the population mean? In general, do sample means make good estimates of population mean ? Why or why not? The sample means do not target or target the population mean. In general, sample means do or do not make good estimates of population means because the mean is an unbiased or biased estimator.
In reality, there were many students who took the midterm. Take a random sample of 5 students and record their scores. Then find the mean. Scores:__________________________ Mean:___________ Take another random sample of 5 students and record their scores. Then find the mean. Scores:__________________________ Mean:___________ Three more times: Scores:__________________________ Mean:___________ Scores:__________________________ Mean:___________ Scores:__________________________ Mean:___________ Write each mean on a different sticker and put the stickers in the appropriate location on the poster at the front of the room. 2. Copy down the dot plot that is created on the poster. 3. What does each dot on the poster represent?
IQ tests supposedly measure our intelligence. They typically are ‘normed’ so that they have a mean of 100 and a standard deviation of 15. (Higher scores show higher intelligence.) Use the graph and use the z-score and percents from columns b and c in Table A, when relevant. If you scored 132, what is your z-score? (Interpret.) Use table A X, z(a), (b), and (c) X z (a) (b) (c) and use the graph! Write down or save your response to use in Part 2 of this quiz. Group of answer choices -2.53 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. 2.13 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. -2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 0.57 percentile rank and 99.43% of people scored smarter than me. 2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 99.43 percentile rank…

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