Info
Warning
Danger

Study Resources (Statistics)

  AP* Statistics – Investigative Task C Chapter 12   Feeling Fatigued? How do you feel today? Tired? "We live in a society where people are always looking for the next sports drink, energy bar, or cup of coffee that will give them the extra edge to get through the day," says researcher Tim.
2 Views
View Answer
  AP* Statistics Quiz C – Chapter 9   During a science lab, students heated water, allowed it to cool, and recorded the temperature over time. They computed the difference between the water temperature and the room temperature. The results are in the table.   Time (in minutes) 10 20 30 40 50 60 Difference in temp. (degrees F) 68 36 20 10 6 4 1. Sketch a scatterplot..
2 Views
View Answer
  AP* Statistics – Investigative Task Chapter 8 Olympic Long Jumps The modern Olympic Games, a modified revival of the ancient Greek Olympian Games, were inaugurated in 1896. Since then, the Games have been held nearly every four years at various sites around the world, and have become a major international athletic competition. YEAR DISTANCE (meters) 1896 6.35 1900 7.185 1904 7.34 1908 7.48 1912 7.60 1920 7.15 1924 7.445 1928 7.73 1932 7.64 1936 8.06 1948 7.825 1952 7.57 1956 7.83 1960 8.12 1964 8.07 1968 8.90 1972 8.24 1976 8.35 1980 8.54 1984 8.54 1988 8.72 1992 8.67 1996 8.50 2000 8.55 2004 8.59 2008 8.34 2012 8.31                                 Based.
2 Views
View Answer
  3. Here is a scatterplot of weight versus height for students in an introductory statistics class. The men are coded as ‘1’ and appear as circles in the scatterplot; the women are coded as ‘2’ and           b. Comment on any differences you see between men and women in the plot.           c. Do.
2 Views
View Answer
  AP* Statistics Quiz C – Chapter 12   Researchers plan to investigate a new medication that may reduce blood pressure for individuals with higher than average blood pressure. 90 volunteers with higher than average blood pressure are solicited. Volunteers are randomly assigned 100 mg of the medicine, 200 mg of the medicine,.
2 Views
View Answer
  AP* Statistics Quiz C – Chapter 8     Baseball coaches use a radar gun to measure the speed of pitcher’s fastball. They also record outcomes such as hits and strikeouts. The scatterplot below shows the relationship between the average speed of a fastball and the average number of strikeouts per nine innings.
3 Views
View Answer
  AP* Statistics – Investigative Task A Chapter 12   Backhoes & Forklifts A heavy equipment manufacturer introduces new models of their backhoes and forklifts, and sells several of these machines. A few months later they discover a problem. An unacceptably high number of their customers needed to seek repairs of the machines’ hydraulic.
1 Views
View Answer
  AP* Statistics Quiz A – Chapter 10 Name__________________________     A large manufacturer of batteries knows that, historically, 10% of its batteries come off the production line defective, and the remaining 90% of batteries come off the production line in working condition. Conduct a simulation to estimate how many batteries the company needs.
3 Views
View Answer
  AP* Statistics – Classwork Chapter 10 For each situation, describe a simulation that you could use to answer the question. Use the included portion of a random digit table to conduct five trials, and report your estimated answer to the question. 1. Sugar Bombs cereal is including a Sherlock Holmes action-figure in.
13 Views
View Answer
  AP* Statistics Quiz B – Chapter 11 Name __________________________     1. Management at a large retail chain is concerned about the possibility of drug abuse by people who work there. They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test..
1 Views
View Answer
  11. Video games A headline in a local newspaper announced “Video game playing can lead to better spatial reasoning abilities.” The article reported that a study found “statistically significant differences” between teens who play video games and teens who do not, with teens who play video games testing better in.
1 Views
View Answer
AP* Statistics – Equation Models Classwork Chapter 9   Here are a variety of contexts with transformed equations. Use the transformed equations to make the requested predictions. 1. explanatory variable: size of TV screen (sq. inches) response variable: cost of TV ($) equation: √cost??= 2.35+0.025(size) predict: cost of a 1500 sq. in. screen   2. explanatory.
3 Views
View Answer
  AP* Statistics - Investigative Task Chapter 10     ESP   Your friend claims he “has ESP”. Being properly skeptical, you decide to test his claim. Here is your plan. You will get ten volunteers to sign their names on identical cards, and seal the cards in identical envelopes. You will then shuffle the pile of.
5 Views
View Answer
  11. Announcements. A high school in Wisconsin stopped having announcements read to students over the intercom system, choosing to have announcements displayed on television monitors located throughout the building. To see how students feel about the new system the principal wants to conduct a survey. Explain how to select a.
3 Views
View Answer
  AP* Statistics – Investigative Task B Chapter 12   Shuffle the Deck A pharmaceutical company is testing a new drug for diabetes patients. Due to various side-effects, they start with a very small sample, ten subjects for their first trial. The subjects take the medication with their evening meal. After the meal they.
2 Views
View Answer
  AP* Statistics – Classwork Chapter 11   A preschool for ages 2 – 4 has classrooms of ten students. The building layout is:                     A   ge 2   A ge 3 A ge 4                         1. Explain how to use a random digit table to select a simple random sample of 30 students.               2. Explain how to use a random digit table to.
9 Views
View Answer
    Year Population (millions) 1950 2519 1955 2755 1960 3020 1965 3334 1970 3691 1975 4066 1980 4430 1985 4825 1990 5255 1995 5662 2000 6057 AP* Statistics – Models Classwork Chapter 9   1. World Population (United Nations database) a) Model (Scale the years!)             b) Prediction for 2005? ________           2. Mortgages (Republic National Bank, founded 1970) a) 1970 – 1988 Model (Scale the years somehow…)           Year Million $ 1970 1.2 1972 2.5 1974 2.9 1976 3.1 1978 5.8 1980 8.3 1982 10.8 1984 14.7 1986 21.8 1988 29.7 1990 32.4 1995 39.5 2000 49.7 b) Compare post-1990 mortgages to the previous trend.               3. Light Intensity a) Model         b) Intensity at Distance Candlepower 2 feet 531.2 5 84.3 8 33.6 10 21.1 15 9.5 20 5.3 25 3.4       12’?   _________ 30’? _________ 1’? _________ 9-8           .
6 Views
View Answer
  AP* Statistics Quiz A – Chapter 11 Name__________________________     1. A statistics teacher wants to know how students in her school feel about mathematics courses. She decides to administer a survey to a random sample of students taking a mathematics course. She has several sampling plans to choose from. Name the sampling.
4 Views
View Answer
  AP* Statistics Quiz A – Chapter 9 Name __________________________     1. If you have a puppy who you are feeding Hill’s Science Diet® original puppy food, the feeding guidelines for puppies who are 10 to 12 months old are as follows (Source: Hill’s feeding puppy’s weight based on this data set? Explain.   2. You.
2 Views
View Answer
  11. Storks Data show that there is a positive association between the population of 17 European countries and the number of stork pairs in those countries. a. Briefly explain what “positive association” means in this context.                 b. Wildlife advocates want the stork population to grow, and jokingly suggest that citizens should be.
2 Views
View Answer
  11. Insulators Ceramics engineers are testing a new formulation for the material used to make insulators for power lines. They will try baking the insulators at four different temperatures, followed by either slow or rapid cooling. They want to try every combination of the baking and cooling options to see.
1 Views
View Answer
    AP* Statistics Quiz D – Chapter 11 Name__________________________   1. A tree farmer hires a botanist to evaluate a blight that seems to be affecting his trees. The trees are planted in horizontal rows on a hill and the blight seems to be a bigger problem near the bottom of the hill..
5 Views
View Answer
  AP* Statistics Quiz B – Chapter 8     Current research states that a good diet should contain 20-35 grams of dietary fiber. Research also states that each day should start with a healthy breakfast. The nutritional information for 77 breakfast cereals was reviewed to find the grams of fiber and the number.
2 Views
View Answer
    AP* Statistics - Investigative Task Chapter 9 Alligators Weight (pounds) Length (inches) 83 86 70 88 61 72 54 74 44 61 106 90 84 89 39 68 42 76 197 114 102 90 57 78 130 94 51 74 640 147 28 58 80 86 110 94 33 63 90 86 36 69 38 72 366 128 84 85 80 82 Scientists collect information on many kinds of wildlife, and for a variety of reasons. Through their research they learn about the animals’ habits, populations, and locations. Such information can help them learn more about the animals, protect endangered species, detect changes that may signal environmental.
2 Views
View Answer
  AP* Statistics Quiz B – Chapter 9     1. The average movie ticket prices in selected years since 1948 are listed in the table below.     a. Use re-expressed data to create a model that predicts ticket prices.   (Hint: scale the year)                 Year Movie Ticket Price 1948 $0.36 1954 $0.49 1958 $0.68 1963 $0.86 1967 $1.22 1971 $1.65 1974 $1.89 1974 $2.03 1976 $2.13 1977 $2.23 1978 $2.34 1979 $2.47 1980 $2.69 1981 $2.78 1982 $2.94 1983 $3.15 1984 $3.36 1985 $3.55 1986 $3.71 1987 $3.91 1988 $4.11 b. Find the movie ticket price this model predicts for 2004.                       2. During.
1 Views
View Answer
  11. Mistakes. Describe the mistake made in the following analyses:   a. Ten teachers compute their average test scores for all their students. Then the superintendent collects their data and finds the school average. He repeats this process for eight different schools and finds a positive correlation between the age of the.
40 Views
View Answer
  AP* Statistics Quiz C – Chapter 11 Name__________________________   1. Administrators at a large hospital are concerned about the possibility of drug abuse by people who work there. They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test. Several plans.
2 Views
View Answer