19. Suppose that in a math class, 44% of the students are women, and 30% are history majors. If majors are independent of gender, what percent of students are women or history majors? Group of answer choices 60.8% 13.2% 74% 37%

520 students from UC Berkeley are surveyed about whether they are from Northern California, Southern California, Central California, or from another state or country. A researcher is interested in seeing if the proportion of students from each of the four regions are all the same for all UC Berkeley students. The table below shows the outcome of the survey. Fill in the expected frequencies. Frequencies of UCB Students' Home Towns Outcome Frequency Expected Frequency Northern California Southern California Central California Out of State 189 152 170 1000

A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.      Undergraduate Major             Graduate School Business Engineering Other Total   Yes   33   43   61 137   No   90 105   68 263   Total 123 148 129 400 What percentage of the students' undergraduate major is Engineering?   a. 65.75%     b. 520%     c. 152%     d. 37%

180 students were surveyed on their current enrollment in Math, Biology, and Chemistry. The results are listed below. 82 students are enrolled in Math. 58 students are enrolled in Biology. 70 students are enrolled in Chemistry. 33 students are enrolled in Math and Bio. 24 students are enrolled in Bio and Chem. 26 students are enrolled in Math and Chem. 14 students are enrolled in all three courses. How many students were enrolled in at least one of the three courses?

18.  Suppose that in a book club, 60% of the members are women, and 35% like to read poetry.  If reading poetry is independent of gender, what percent of people in the book club are women who like to read poetry? Group of answer choices 74% 25% 95% 21%

Help.

In a survey of 3343 adults aged 57 through 85​ years, it was found that 83.3%of them used at least one prescription medication. Complete parts​ (a) through​ (c) below. a. How many of the 3343 subjects used at least one prescription​ medication?

A fundraiser is offering a small gift to people making a donation. The donor can choose one of four gifts: a mug, a t-shirt, a plush toy, or a water bottle. The fundraiser would like to know if any of the gifts were more or less popular or were they equal in preference. The data for n= 40 donors are below: