What percent of students preferred iced tea?

Practice questions for a textbook are marked with difficulty levels of easy , intermediate , and difficult . If 56 of the 140 practice questions are rated as intermediate , approximately what percentage of the questions are intermediate level ?

A study wanted to compare the proportions of teenagers that use youtube for studying. A total of 1069 teenage boys and girls were surveyed. The response variables are Yes and No. Here are the data:

A study of 552 first-year college students asked about their preferences for online resources. One question asked them to pick their favorite. Here are the results in a pie chart. Pie Chart for the Online Resource Wikipedia 9% Libriary 14% Other Google 74% Select correct answer(s). This is a multiple-answer question. It may have more than one correct answers. i. The percentage in the pie chart shows the percent for each category of a qualitative or a categorical variable. ii. Google is the favorite for about three-quarters of the students. iii. More than 85% of the students are in favor of using either Google or library. iv. Less than 20% of the students are in favor of using either library or Wikipedia.

The histogram below gives the length of service of members of the Department of Chemistry at a particular university. The classes, in years of service, are 0-4.9, 5–9.9, etc., and the vertical axis represents the number of faculty. (a) What percent of the department faculty have 25 or more years of service? Answer: % (b) If a member of the department is chosen at random to serve on a university committee, what is the probability (in decimal form) that the chosen representitive will have between 25 and 40 years of service? Answer: (c) What is the probability the representative above will have less than 15 years of service given that the person has less than 20 years of service? Answer: Chenistry Faculty 12 11 10 9 8 6 5 4 3 2 1 10 15 20 25 30 35 40 Years of Service 7.

It is known that, in a small town, 0.22 percent people are allergic to pollen and 0.2 percent people are allergic to nuts. Also, it is known that 0.49 percent of people are allergic to both pollen and nuts. What percentage of people in this town are not allergic to either pollen or nuts? (Write your answer in percentage points, for example, write 75 for 75%).

At a school several teachers were holding a contest to see which class could earn the most trivia points. Mrs.William's class scored 61 points. Mr. Adams class earned 48 points. Mrs. Brown's class earned 50 and Mrs.Daniel's class earned 50. Determine the mean, median, mode and range of the number of points scored.

If 200 subjects were studied and 120 of them expressed a preference for brand x, what percentage expressed a preference for brand x? Round to the nearest tenth percentage

Joey took a survey of his classmates' food preferences and recorded them in the table below. Preferred Food Tacos Pasta Other Total Frequency 14 13 23 50 What is the relative frequency of survey members who prefer tacos.

The national profession exam for registered nurses, the NCLEX, has pass a rate of 85% for the first time exam takers. If 260 first time RN candidates were to take the exam, What is the mean for the number of people who pass?