An instructor from the school of business samples the students in his introduction to business class...

An instructor from the school of business samples the students in his introduction to business class to learn about the amount of dollars students spend per semester on textbooks. The distribution that follows indicates the results of his sample. SHOW WORK.

Textbook Costs per Student per Semester (in dollars)

65, 147, 171, 142, 153, 187, 195, 106, 127, 178, 178, 205, 175, 178, 133, 186, 55

a) Construct a Box-and-Whisker Plot
b) Calculate the interquartile range
c) Determine if there are any outliers including potential outliers within the data set. State their value(s).

Expert Solution

orchestra answered 2 years ago

The instructor of a class offers his students a choice. Their final grade may be calculated...

The instructor of a class offers his students a choice. Their final grade may be calculated in one of two ways, which they must decide on as a class. The class has a total of 500 pts available. The 29 students in the class have a mean score of 407 pts, a standard deviation of 15 and a median score of 420. Option 1 is to have the grades based solely on the percentage of total points possible in the...

A high school physics teacher wondered if his students in the senior class this year will...

A high school physics teacher wondered if his students in the senior class this year will be more likely to go into STEM (Science, Technology, Engineering, Mathematics) majors than Social Science and Liberal Arts majors. He asked each of his 65 students about their first choice for major on their college applications and conducted a Chi-square test for goodness of fit with an alpha level of .05 to see if the number of students choosing each category differs significantly. 35...

A student polls his school to see if students in the school district are for or...

A student polls his school to see if students in the school district are for or against the new legislation regarding school uniforms. She surveys 450 students and finds that 214 are against the new legislation. Calculate the EBP. Use a 90% Confidence Level. Fill in the blank, round to three decimal places.

An instructor is grading tests for a class of 30 students. After the 29th student, the...

An instructor is grading tests for a class of 30 students. After the 29th student, the class mean is 51 and the class median is 81. the tests may be assumed to be in order from lowest to highest. a. how is the distribution skewed? b. what score must the 30th student get in order to raise the class average to 85.5? c.after the 30th score is added to the group, the median rises to 82. What is the 16th...

An instructor is interested in assessing students' typing speed in the class. He knows that the...

An instructor is interested in assessing students' typing speed in the class. He knows that the average at the university is 49 word per minute (wpm) with a SD of 18 wpm. He collects data from 31 of his students. a) What is the probability of the average typing speed being less than 49 wpm? probability = b) What is the proability of the average typing speed being between 51 and 53 wpm? probability = Note: Do NOT input probability...

At a large university, freshmen students are required to take an introduction to writing class. Students...

At a large university, freshmen students are required to take an introduction to writing class. Students are given a survey on their attitudes towards writing at the beginning and end of class. Each student receives a score between 0 and 100 (the higher the score, the more favorable the attitude toward writing). The scores of nine different students from the beginning and end of class are shown below. Use the Wilcoxon signed-rank test to check at a 5% significance level...

As part of a class exercise, an instructor at a major university asks her students how...

As part of a class exercise, an instructor at a major university asks her students how many hours per week they spend on social networks. She wants to investigate whether time spent on social networks differs for male and female students at this university. The results for those age 21 or under were: Males: 5, 7, 9, 10, 12, 12, 12, 13, 13, 15, 15, 20 Females: 5, 7, 7, 8, 10, 10, 11, 12, 12, 14, 14, 14, 16,...

The instructor claims that the average age of his students is 30 years old. To test...

The instructor claims that the average age of his students is 30 years old. To test this claim a sample of 33 students is taken. At an alpha level of .05 is there enough evidence to support this instructors claim? Sample ages: 32,28,24,18,35,41,27,28,28,31,27,25,28,31,35,40,36,32,29,28,19,21,26,24,21,19,27,26,23,27,30,20,21 Please list null and alternate hypothesis, critical value, test value, and all steps towards rejecting or accepting the null hypothesis.

In a university 20% students belong to the school of business (B), 15% to the school...

In a university 20% students belong to the school of business (B), 15% to the school of engineering(E) and 30% belong to the school of social sciences(S). Of the school of business students 35% have taken a statistics course, of the school of engineering students 45% have taken a statistics course, and of the school of social sciences students, 20% have taken a statistics course. Between the three schools, what fraction of students have taken a statistics course (Q)? If...

(20) 2.A school boasts of its tutoring program offered to students. Two samples of 71 students...

(20) 2.A school boasts of its tutoring program offered to students. Two samples of 71 students each are taken. The first sample consists of students who have not taken part in the tutoring program while the second sample consists of students who have taken part in the tutoring program. An aptitude test was given to both samples. The first sample showed a mean score of 150 with a standard deviation of 20 while the second sample showed a mean score...

Question