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GCSD_Math_Prob & Stats_Review _Fall 2015 [4779]StudentClassDateInstructionsScratch paper and calculators are permitted on this test. Do your best work to answer every question. Please?turn in all scratch work to your teacher upon completion of this test.?1.When analyzing the geometry scores of students at High Point High School, Mr. Bane found that the mean score of 20 randomly selected students was 78%. This information represents? ________________.??A.a statistic??B.a parameter??C.both statistic and parameter??D.neither statistic or parameter???2.The principal picked one student from the senior class and one student from the junior class to win iPods. These events would be classified as _______________.??A.dependent??B.independent??C.both dependent and independent??D.neither???3.The following data shows the ticket prices for ten concerts scheduled at a stadium:?$32, $36, $65, $30, $46, $19, $46, $40, $70, $16?A ticket price of $70 is added to the list. Which of the following measures of data will change???A.Range??B.Median??C.Maximum??D.Minimum???4.?Using the box-and-whisker plot above, what is the median of the data set???A.60??B.62??C.63??D.65???5.A radio station asks its listeners to call in their opinion regarding the format of the morning show. What type of sampling is exemplified???A.Systematic??B.Simple random??C.Cluster??D.Convenience???6.??Using the stem-and-leaf plot shown above, choose the correct statement describing grades on a linear algebra exam.??A.The range of the grades is between 98 and 23.??B.Of the 29 students who took the exam, 9 of them scored between 80 and 89.??C.There are no gaps in the data.??D.The data is bimodal.???7.A landscaper wishes to use several different types of plants. The categories include color (red, yellow, and green), type (flowers and shrubs), and height (tall, short). How many different combinations can be used if he selects one color, one type, and one height???A.6??B.7??C.12??D.18???8.James is conducting an experiment where he is flipping a coin and recording how many times he gets tails. Based on the first 10 trials, he got tails 8 times, giving him an experimental probability of 4/5 of getting tails next. What do you expect to happen to this probability as James continues to flip the coin for large amounts of trials???A.James will continue to get tails four out of every five times he flips the coin.??B.James will no longer get tails on the coin.??C.James will get tails exactly half the time that he flips the coin.??D.James' experimental probability will get closer to the theoretical probability of 1/2.???9.A six-sided die is rolled. What is the probability that the number on top is less than 6???A.??B.??C.??D.???10.Teresa and Julia are among 10 students who have applied for a trip to Washington, D.C. Two students from the group will be selected at random for the trip. What is the probability that Teresa and Julia will be the 2 students selected???A.??B.??C.??D.???11.What number represents the 50th percentile of the following data??17, 4, 9, 12, 5, 8, 12, 11, 14??A.11??B.12??C.17??D.10.2???12.?The?histogram above?shows what kind of distribution???A.Symmetric??B.Positively Skewed??C.Negatively Skewed??D.Bimodal???13.??The histogram above shows what kind of distribution???A.Positively Skewed??B.Negatively Skewed??C.Symmetric??D.Bimodal???14.Which branch of statistics would employ probability to predict how many miles one would be able to drive a 2000 Toyota Camry during its lifetime???A.predictive statistics??B.descriptive statistics??C.inferential statistics??D.differential statistics???15.Your teacher decides to add 10 points to all students' test grades for a unit test. Which of the following will result???A.The mean will be multiplied by 10.??B.The standard deviation will increase by 10.??C.The mean will not change.??D.The standard deviation will not change.???16.??The box-and-whisker plots?above show the ages of the parents of students at East Elementary School, E, and at Harper High School, H. Which statement is?NOT true???A.The median of the high school parents is 40.??B.The range of the ages of the parents of elementary students is 35 years.??C.The ages of parents of elementary school students fall within a smaller range than the ages of parents of high school students.??D.The majority of the parents of high school students are 35 or older.???17.To estimate the amount of time state college students who live off campus spend to commute to classes each week, a random sample of 45 such students was surveyed. What is the population???A.all state college students??B.state college students who live off campus??C.the 45 students surveyed??D.state college students who live on campus???18.To determine her breathing rate, Carolyn divides up her day into three parts: morning, afternoon, and evening. She then measures her breathing rate at 2 randomly selected times during each part of that day. What sampling method was the researcher using???A.Cluster??B.Random??C.Systematic??D.Stratified???19.A multiple-choice test has five questions, each with five choices for the answer. Only one of the choices is correct. You randomly guess the answer to each question. What is the probability that you answer the first two questions correctly???A.0.4??B.0.04??C.0.02??D.0.2???20.??What is the interquartile range for the data shown above???A.3??B.5??C.8??D.12???21.?The histogram above shows the relationship between the price of a used car and the number of used cars sold. Based on the histogram, which statement must be true???A.No used car sold for $7,000.??B.Exactly 5 of the used cars sold for $4,000.??C.The most expensive used car sold for $11,999.??D.Most of the used cars sold for less than $6,000.???22.Decide which method of data collection you should use to collect data for the following?study: ?A study of the effect on the taste of a snack food made with a sugar substitute.??A.survey??B.simulation??C.observational study??D.controlled experiment???23.The ages of two exercise groups at a local fitness center are listed below.?Group A: 37, 36, 32, 41, 42, 36, 44, 45?Group B: 26, 40, 38, 36, 42, 40, 40, 36?Which statement about the data is true???A.The mean age is the same for both groups.??B.The range of ages is greater in Group A than in Group B.??C.The mode of the ages for both groups is 36.??D.The median age is the same for both groups.???24.A cooler at a picnic contains 12-ounce cans and 16-ounce bottles of both lemonade and apple juice. Drinks?TypeNumber?12-ounce?lemonade?4??12-ounce apple juice?5?16-ounce lemonade?3??16-ounce apple juice?6?Adam was very thirsty, so he randomly grabbed a 16-ounce bottle from the cooler. What is the probability that his randomly selected bottle will be apple juice? ??A.??B.??C.??D.???25.Peter is flying to San Francisco. There is a 75% chance his plane will be on time. If the plane is on time, there is a 95% chance his bags will arrive as scheduled. If the plane is late, there is a 70% chance his bags will arrive as scheduled. Which fraction represents the probability that the plane was late, given that his bags did not arrive as scheduled???A.????B.????C.????D.????? ................
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