Students were surveyed and asked 2 questions.  All of the data  collected from the survey is presented in the two-way frequency table below.How many of the students surveyed said they have chores?

A survey asked 40 students if they play an instrument and if they are in band.25 students play an instrument.20 students are in band.20 students are not in band.Which table shows these data correctly entered in a two-way frequency table?A.B.C.D.SUBMITarrow_backPREVIOUS

A group of 200 students were asked whether they have a curfew and whether they have chores at home. Their responses are summarized in the following table.Have chores Don't have choresHave a curfew 29 33Don't have a curfew 61 77(a) What percentage of the students have a curfew? %(b) What percentage of the students don't have chores? %(c) What percentage of the students who don't have chores have a curfew? %(d) Is there evidence that students who don't have chores tend to have a curfew more often than average? No, because the percentage found in part (c) is about the same as the percentage found in part (a). No, because the percentage found in part (c) is about the same as the percentage found in part (b). Yes, because the percentage found in part (c) is much greater than the percentage found in part (a). Yes, because the percentage found in part (c) is much greater than the percentage found in part (b).ExplanationCheck

Fifty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below.Part-time Student Course Loads# of Courses Frequency Relative Frequency Cumulative RelativeFrequency1 25 0.5 2 15 3 Part (a)Fill in the blanks in the table.Part-time Student Course Loads# of Courses Frequency Relative Frequency Cumulative RelativeFrequency1 25 0.5 2 15 3 Part (b)What percent of students take exactly two courses? %Part (c)What percent of students take one or two courses? %

Below is the table showing the number of working hours (per week) of 400 students:Number of Hours Frequency  0 -   9  2010 - 19  8020 - 2920030 - 39100What is the relative frequency of students working for 9 hours or less?Group of answer choices0.050.952080

Consider the following frequency table representing the distribution of hours students study for an exam in a week.Hours Students Study for an Exam in a WeekClass Frequency8–158–158816–2316–234424–3124–31141432–3932–394440–4740–471010Copy DataStep 1 of 2 :  Determine the relative frequency for the third class as a simplified fraction.