Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 147 subjects with positive test results, there are 30 false positive results. Among 150 negative results, there are 3 false negative results. Complete parts (a) through (c). (Hint: Construct a table.) a. How many subjects were included in the study? The total number of subjects in the study was

Research Study: The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project. Instructions: Use the data collected to compute the values listed in Table#1. Use .05 significance. Research Data Collected: Student Chris Mary Paul Juan Marcelo Table #1 1. SP 2. 2 3. ΣΧ 4. 5. 6. 7. ΣΥ 9. SSX SSY a 8. b F ratio Number of pages typed 37 36 42 24 16 Typing speed 73 44 56 72 50 10. F critical (value from F table)

Is the number two in the sentence a statistic or a perimeter? Two students out of all 29 students in a class have red hair.

Research Study:   The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project.Instructions:   Use the data collected to compute the values listed in Table#1.  Use .05 significance.   Research Data Collected: Student Number of pages typed Typing speed Chris 37 70 Mary  6 54 Paul 12 25 Juan 34 42 Marcelo 16 35   Table #1 1.      SP 2.      r2 3.      ∑x 4.      ∑y 5.      SSx 6.      SSy 7.      a 8.      b 9.      F ratio 10.   F critical (value from F table)

Virginia polled a large sample of individuals to find the percentage of students with known food allergies and the percentage of students without known food allergies. Which of the following could sufficiently display the data if only the two given categories are to be included? Select the correct answer below:   bar graph   pie chart   either a pie chart or a bar graph   neither a pie chart nor a bar graph

Examples of population or sample? A. The types of cars driven by ur classmates B. The wt of five out of 33 tomatoes at the store C. A recent poll of 100 students in the US on studying habits

The following tables show the make-up of students in a school's math club. Male Female Totals Freshmen 3 5 8 Sophomores 4 10 Juniors 7 5 12 Seniors 4 10 Totals 20 20 40 P(female I freshman)? 4 20

A sample of 200 college undergraduates was collected and the student’s gender and method of getting to class that day were collected. The data appears below. Gender Drive Bike Walk Total Male 95 10 10 115 Female 65 5 15 85 Total 160 15 25 200 What proportion of the students are both female and ride a bike to class?

(c) Draw a boxplot of the differenced data. Does this visual evidence support the results obtained in part (b)? Which boxplot below represents the data? A. O C. -6 -6 -4 -2 Differences -2 Differences 2 Q 2대 B. -6 -6 -4 -4 -2 Differences Differences 0 0 2

A statistics teacher asked two different students, Lexie and Jennifer, to go to Wegmans and sample 30 shoppers each.  The population of interest for both people can be defined as, “People who shop at the Johnson City, NY Wegmans store”.  Here is what each person did to collect their sample:                    Lexie: She stood outside at the entrance to the store on 3 different days and times and surveyed every 15th person to walk by her.  She surveyed 10 people each time to get her 30.   Jennifer:  She went to Wegmans after her nursing shift first thing Wednesday morning to buy deodorant since she ran out.  When she was in the pharmacy area she surveyed all the people around her and then, to get up to 30 surveys, she went to the health food section and surveyed everyone she was there.     Identify at least 2 specific reasons why Lexie’s approach is more likely to give a representative sample.  Consider sources of bias, or types of shoppers who might be excluded by Jennifer’s approach.…