How many bit strings of length seven either begin with two 0s or end with three 1s?
You randomly survey students in your school. You ask whether they have jobs. You display your results in the two-way table. How many male students do not have a job?
For the following exercises, enter the data from each table into a graphing calculator and graph the resulting scatter plots. Determine whether the data from the table would likely represent a function that is linear, exponential, or logarithmic.
A group of children and adults were polled about whether they watch a particular TV show. The survey results, showing the joint relative frequencies and marginal relative frequencies, are shown in the two-way table.
What is the value of x?
Painful bone metastases are common in advanced prostate cancer. Physicians often order treatment with strontium-89 (89Sr), a radionuclide with a strong affinity for bone tissue. A patient is given a sample containing 4 mCi of
If 20% of the
b. what is the biological half-life of
Use the two-way table of data from another student survey to answer the following question.
Find the conditional relative frequency that a student likes to lift weights, given that the student likes aerobics.
Raul is conducting a survey for the school news blog. He surveys 200 senior-class students and finds that 78 students have access to a car on weekends, 54 students have regular chores assigned at home, and 80 students neither have access to a car, nor have regular chores to do. Raul is having a hard time putting the data into a two-way table. Car No car Chores No chores a. Copy and complete the two-way table to help Raul figure out the number of students in each situation. b. Two-way tables often include row and column totals. Your two-way table should now have row and column totals. Are these students' car privileges and their participation in regular chores related? Describe your response in light of the issue.