Classify each sample as random, systematic, stratified, or cluster and explain your answer. Every seventh customer entering a shopping mall is asked to name his or her favorite store.
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Classify each sample as random, systematic, stratified, or cluster and explain your answer.
Every seventh customer entering a shopping mall is asked to name his or her favorite store.
Classify each sample as random, systematic, stratified, or cluster and explain your answer.
Every seventh customer entering a shopping mall is asked to name his or her favorite store.
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- You want to find out the top three food items sold in your school cafeteria. Select the best way to generate a list of this data. Survey the students in your math class. Gather data about the number of sales of each food item from the cashier. Interview all the teachers about what they consider to be the top food item. Ask 10% of the students in each grade to tell you their choice for the top food item.A teacher rated the reading ability level of six fourth grade children in a special math program. The reading level ratings were as follows: 3, 3, 2, 8, 4, and 4. What is the mean of this data set? Select one: a. 12 b. 3.5 c. 3 d. 4College students were surveyed to check what they favored between basketball, football or baseball. The result of the survey is listed in the table below. Favorite sports Basketball Football Baseball Total Male 22 40 15 Female 45 12 16 Total
- Marvel movies - Kylie is a huge fan of Marvel movies. She finds an online poll that asks, "What is the best movie of the Marvel Cinematic Universe?" and saves the data. For a class project she wants to determine if the distribution of her classmates' favorite Marvel movies is different from the one published in the online poll. She surveys the 215 students in her statistics class. The table below contains the percentages reported by the online poll and the observed counts from her classmates. Report all calculated answers to 4 decimal places. Poll Observed Movie Percentage Count Captain America: The Winter Soldier 18.1% 34 Guardians of the Galaxy 14% 34 The Avengers 13.9% 32 Captain America: Civil War 11.4% 24 Iron Man 7.5% 20 Doctor Strange 3.7% 10 Other Marvel movie 31.4% 61The table below shows the grades of the 20 students of a martial arts class. There are three grades: satisfactory(S), unsatisfactory(U), and incomplete(I). Question: Create a frequency table. You MUST include the “total” row and show the column sum when appropriate. Plus, you MUST include five columns with these headings: grade, f, %, c.f, and c.%. Note that all percentages MUST be with ONE decimal digit.As part of a sixth-grade class project the teacher brings to class a large jar containing 200 gumballs of two different colors: red and green. Andy is asked to draw a sample of his own choosing and estimate the number of red gumballs in the jar. Andy draws a sample of 25 gumballs, of which 15 are red and the rest are green. Use Andy's sample to estimate the number of red gumballs in the jar. Answer:
