A man was buying shoes wheb a salesperson commebted on hiw small his feet were. After telling her she had a lousy sales technique, he decided to inveatigate if he really does have feet that are smaller than the typical american man. If he is in the 20th percentile for shoe size among american men, is the saleswoman right or wrong?

I had to find the 20th percentile with the following data.    0, 1, 2, 2, 2, 3, 4, 4, 4, 8..... My first answer was 1.8. I got that by doing .20(10) = 1.8. This answer was wrong. I rounded up to 2 and that was also wrong. Was I supposed to indentify all the numbers that would be categorized in the 20th percentile?

A recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $640. If the first quartile for monthly housing rent was $496, find the percent of monthly housing rents that were the following values. (a) more than $496 (b) less than $640 (c) between $496 and $640

Que On the right are ratings for passers in a football league. Find the three quartiles for the ratings. Passer Rating Points O Martinez 101.5 What is Q,? Washington 94.8 Abdoullah 92.8 Schmidt 85.2 Jarvis 84.1 Jefferson 80.5 Roddick 79.6 Singh 77.8 Goldman 77.1 Harvey 75.5 !!

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Carlos is a very hard-working student who studies every night for at least one hour. His favorite subject is mathematics. He knows that his grade for each marking period is determined by a weight of 50% for all daily work and 50% for major grades, such as, tests, projects and quizzes. He received the following test grades for mathematics during the fourth marking period: 89, 78, 90, 81, 95, and 90. What was his mean mathematics test grade rounded to the nearest whole number? O 90 O 87 O 77 O 93 O O O

A college professor conducted student evaluations at the end of a semester. One important question asked was, "Would you recommend this professor to a friend?” Fifty-four students responded using the following 1-to-5 rating scale. 1 = "absolutely not" 2 = "probably not” 3 = "no opinion" 4 = "probably yes" 5 = "absolutely yes" Student responses were recorded. "Blank" indicates that a student skipped this question on the evaluation. 4 #28: #1: Blank #10: #2: Blank #3: #4: Blank #5: #6: #7: #8: 4 #9: 5 4 5 2 # 11: #12: #13: #14: #15: # 16: #17: 3 Blank 5 Blank Blank 1 5 Blank # 19: #20: #21: #22: #23: #24: #25: #26: 4 #18: Blank #27: 1 2 #30: 1 #31: 3 Blank 5 #29: 5 Blank #32: #33: #34: #35: 1 #37: 5 Blank 4 1 5 4 5 #38: #39: #40: # 41: #42: #43: #44: #36: Blank #45: 2 #46: Blank 1 5 4 Blank #49: 5 #47: Blank #48: #50: #51: #52: Blank #53: 1 5 4 5 5 1 5 1 #54: Blank

Use the chart below to answer questions 1-6 about the ACT's. The ACT is a standardized test used by college admissions offices as a factor in whether an applicant is or is not admitted to their college. Since so many students take this test each year, the distribution of results are typically approximately normal. The table below shows the mean and standard deviation for each section of within the ACT for all test takers in the years 2015, 2016, and 2017. Standard Section Mean Deviation English 20.3 6.8 Math 20.7 5.4 Reading 21.4 6.5 Science 20.9 5.5 STEM 21.0 5.2 A

An online shop owner believes that 85% of her customers will want to go into a real store. She surveyed 50 customers and 39 said they want to visit a store. Is the owners claim correct? Use a 0.01 level of significance.

What is the mean of all the ninth graders scores?