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- Every day a school bus driver passes the same traffic light twice, once before school and once after. Each time he passes the light, he records if it is red, green, or yellow. Here is a summary of the data he got after 200 days. Traffic light before school red red red green green green yellow yellow yellow Traffic light after school red green yellow red green yellow red green yellow Number of days 25 38 12 34 36 11 16 13 15 Suppose the driver will continue recording the colors for 150 more days. In how many of these 150 days will the light be yellow exactly once? Use the data to make a prediction.In 2.29, when they say make a scatterplot of the log of briths to users do they mean make a scatterplot of the log of births and the log of users, or just take the log of births and keep users the same.Q 7.1 Researchers watched groups of dolphins off the coast of Ireland in 1998 to determine what activities the dolphins partake in at certain times of the day ("Activities of dolphin," 2013). The numbers in table below represent the number of groups of dolphins that were partaking in an activity at certain times of days: Table: Dolphin Activity Activity Period Row Total Morning Noon Afternoon Evening Travel 6 6 14 13 39 Feed 28 4 0 56 88 Social 38 5 9 10 62 Column Total 72 15 23 79 189 Is there enough evidence to show that the activity and the time period are independent for dolphins? Test at the 1% level. (i) Which of the following statements correctly defines the null hypothesis HO? A. the activity for dolphins is independent of the time period B. the activity for dolphins is not independent of the time period C. neither of these statements is correct for HO Enter letter corresponding to correct…
- The table shows the leading causes of death in a certain country in a recent year. The population of the country was 311311 million. If you lived in a typical city of 500,000, how many people would you expect to die of cancercancer each year? Cause Deaths Cause Deaths Heart disease 596 comma 700596,700 Alzheimer's disease 84 comma 90084,900 Cancer 575 comma 300575,300 Diabetes 73 comma 40073,400 Chronic respiratory diseases 143 comma 100143,100 Pneumonia/Influenza 53 comma 40053,400 Stroke 128 comma 600128,600 Kidney disease 45 comma 30045,300 Accidents 122 comma 500122,500 Suicide 38 comma 60038,600 About people would be expected to die of cancer each year. (Type a whole number. Round to the nearest person as needed.)Price of eggs and milk: The following table presents the average price in dollars for a dozen eggs and a gallon of milk for each month from January through October 2007. Use a TI-84 calculator to answer the following. Dozen Eggs Gallon of Milk 1.30 3.16 1.28 3.12 1.21 3.07 1.24 3.00 1.21 3.08 1.24 3.02 1.25 3.05 1.26 3.06 1.35 2.99 1.54 3.00 Compute the least-squares regression line for predicting the price of milk from the price of eggs. Round the slope and y-intercept to at least four decimal places.34. Book Collection Between 1980 and 2000 a rare book collec- tor purchased books for his collection at the rate of 40 books per year. Use this information to complete the following table. (Note that not every year is given in the table.) Year Number of books Year Number of books 1980 420 1995 1981 460 1997 1982 1998 1985 1999 1990 2000 1220 1992
- The figure below shows timber production in particular months from 2000 to 2005. Which of the following months of the year seems to have the lowest timber production? (a) January (b) April (c) July (d) October(c) Calculate d and sa-Listed below are the numbers of deaths resulting from motor vehicle crashes. Let x represent the year, with 1975 coded as x = 1, 1980 coded as x = 6, 1985 coded as x = 11, and so on. Construct a scatterplot and identify the mathematical model that best fits the given data. Use the best model to find the projected number of deaths for the year 2028. x (year) 1975 1980 1985 1990 1995 2000 2005 2010 D y (deaths) 44,533 51,122 43,809 44,590 41,798 41,960 43,436 32,697 (...) Choose the correct graph below. O A. O B. O C. D. 52000- 52000- 52000- 52000- DDDD 00 X X X X 32000+ 32000 32000+ 32000+ 0 40 0 40 0 40 0 40 What is the equation of the best model? Select the correct choice below and fill in the answer boxes to complete your choice. Enter only nonzero values. (Type integers or decimals rounded to three decimal places as needed.) O A. y= X B. y = + In x O C. y = + O D. X y=² O E. y = x² + X + Use the best model to find the projected number of such deaths for the year 2028. The projected…
- I need help answering a-1 and a-2 Miles traveled since the last maintanence: Miles traveled since the last maintenance 11973 11969 11967 11948 11925 11922 11896 11883 11837 11814 11800 11798 11789 11782 11781 11778 11758 11757 11707 11704 11698 11691 11668 11662 11615 11610 11576 11533 11518 11462 11461 11418 11359 11358 11344 11342 11336 11248 11231 11222 11168 11148 11127 11112 11100 11048 11018 11003 10945 10911 10902 10802 10802 10760 10759 10755 10726 10724 10674 10662 10633 10591 10551 10518 10473 10355 10344 10315 10235 10227 10210 10209 10167 10140 10128 10095 10081 10075 10055 10000please show steps for C. D. & E. thank you.The data are given sequentially so the outcome of the fourth roll is located in row 1 , column ? Of the table. the outcome of the fourth roll is ? .