You want to assess the differences in frequency counts for four different groups. You know there are 150 people total. Without any additional information about how the data is distributed, what would you use for the "expected frequency" in each group?     a.1/4 b.37.5 c.25 d..375

The following histogram represents the distribution of scores on a ten point quiz. Step 3 of 3: What is the total number of people who made a score between 2 and 4 inclusive? Quiz Scores 16- 14- 12 10 2- 2 3 4 5 6 7 10 Score Frequency - o0

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Students were asked what grades they usually get in school. For twelfth-grade students who responded to this question and the question about how often they wear seatbelts when driving, a summary of frequency counts for combinations of responses to the two questions is as follows. WearsSeatbelt Usual School Grades   A and B C D and F Total   Never 55 40 17 112   Rarely 129 95 21 245   Sometimes 168 109 9 286   Most times 290 129 25 444   Always 1,059 305 50 1,414 Total   1,701 678 122 2,501 (a) The total number of students in the table is 2,501. What percentage of these 2,501 students said that they usually get A's and B's in school? (Round your answer to one decimal place.) % (b) What percentage of the 1,701 students who said that they usually get A's and B's said that they always wear a seatbelt when driving? (Round your answer to one decimal place.) % (c) What percentage of the 678 students who said that they usually get C's said that they always wear a…

9. In 2016 an online poll was conducted regarding the results of the 2016 NBA All-Star Dunk Contest. The poll asked 100,000 people, "Who [do you think] won the dunk contest?". The results are shown in the relative frequency table below Response Percentage Aaron Gordon 55% Zach Lavine 45%

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Read the following prompt and complete 3.a and 3.b

(a) Determine the population mean pulse. The following data represent the pulse rates (beats per minute) of nine students enrolled in a statistics course. Treat the nine students as a population. Complete parts (a) through (c). The population mean pulse is approximately beats per minute. (Round to one decimal place as needed.) Student Pulse O Perpectual Bempah 81 Megan Brooks Jeff Honeycutt 75 75 Clarice Jefferson 84 Crystal Kurtenbach 90 Janette Lantka 71 Kevin McCarthy 67 Tammy Ohm 71 Kathy Wojdya 85

Students were​ asked, "How stressed have you been in the last​ week, on a scale of 0 to​ 10, with 0 being not at all stressed and 10 being as stressed as​ possible?" The​ students' responses are shown in the frequency distribution below. Construct a histogram and frequency polygon for the data.  Stress Rating 0 1 2 3 4 5 6 7 8 9 10 Frequency 2 1 1 18 19 19 12 27 25 12 11

Subject : Basic Statistics 2. I've posted an image of the question.