Ch. 12 Q (instead of test)

Ch. 12 Q (instead of test) - during 10 consecutive months....

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Honors Algebra 2 Name ________________________ Chapter 12 Quiz Keeney Period _____ Date ______________ Directions: This is a take home quiz. You may use your book, notes, and calculator. You may NOT use another person in any way. Work that appears to be copied will be examined closely and questioned. Read each question. Show the set up for all calculations for credit. Use labels where appropriate. Circle your answers. 1. A principal takes a random sample of the classes at her school and finds the number of students in each class. The data are: 17, 23, 25, 31, 14, 19, 27, 33, 20, 23, 11, 30, 23, 35, 16, 25, 17, 28, 32, 21 Find the mean, median, and mode for the data. 2. A travel agent is interested in the number of days people in a town go on vacation. The results from a random sample of people are shown below: 5 3 4 5 7 6 5 3 3 4 5 7 3 4 4 6 3 5 7 5 4 5 6 5 4 If one person from the sample is randomly selected, find the probability that the person spends at least 5 days on vacation.
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3. The data below represents the number of inches of rain that fell in Snellville
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Unformatted text preview: during 10 consecutive months. 6.3 5.7 7.3 4.7 5.3 3.7 6.8 7.6 4.2 3.4 Find the range, variance, standard deviation, and mean deviation for the data. Round to the nearest hundredth. 4. If a fair coin is tossed 14 times, find the probability that tails results exactly 10 times. Round your answer to the nearest hundredth. 5. The scores on a reading test are normally distributed with a mean of 150 and a standard deviation of 20. Find the z-score of a test score of 175. 6. A restaurant has found that 55% of their customers have coffee with their meals. If 12 people eat at this restaurant, find the probability that exactly 7 of them will have coffee with their meals. 7. If the grades on a test have a normal distribution, an average grade of 75, and a standard deviation of 10, what percentage of the grades are between 65 and 85? 8. Which distribution of data shown is the best representation of a normal curve?...
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Ch. 12 Q (instead of test) - during 10 consecutive months....

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