In a survey of 400 Latin music downloads in a certain year, 200 were regional (Mexican/Tejano), 100 were pop-rock, 55 were tropical (salsa/merengue/cumbia/bachata), and 45 were urban (reggaeton). Calculate the following relative frequencies. (a) that music download was pop-rock (b) that music download was neither tropical nor regional (c) that music download was not regional HINT [See Example 1.]

In a survey of 400 Latin music downloads in a certain year, 200 were regional (Mexican/Tejano), 100 were pop-rock, 55 were tropical (salsa/merengue/cumbia/bachata), and 45 were urban (reggaeton). Calculate the following relative frequencies. (a) that music download was pop-rock (b) that music download was neither tropical nor regional (c) that music download was not regional HINT [See Example 1.]

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The Pew Research Center conducted a survey of randomly sampled American adults, asking them about their use of social networking sites such as Facebook. The table below shows the frequency of users "liking" content on Facebook, with the data shown by gender. Does the frequency of "liking" depend on the gender of the user? Į Liking/Gender Male Female Total Every day 77 142 219 3 – 5 days/week 39 54 93 1 – 2 days/week 62 69 131 Every few weeks 42 44 86 Less often 166 182 348 Total 386 491 877 Table 1 Gender and frequency of "liking" content on Facebook Round your answer for the chi-square statistic to one decimal place, and your answer for the p-value to three decimal places. chi-square statistic = i p-value i
Suppose that in a survey of 1,000 U.S. residents, 721 residents believed that the amount of violent television programming had increased over the past 10 years, 454 residents believed that the overall quality of television programming had decreased over the past 10 years, and 362 residents believed both. What proportion of the 1,000 U.S. residents believed that either the amount of violent programming had increased or the overall quality of programming had decreased over the past 10 years? (Round your answer to 3 decimal places.)
A study showed that about 21% of adults go to bed after midnight. This was found using a sample of 800 adults where 168 responded they usually go to bed after midnight. Which of the following is an example of a relative frequency? O 800 O 21% 168 O None of these.
During one shift, the express lane clerk recorded how many times customers violated the "10 items or less rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents 7 or more items," not just 7 items. 124 10- 2- 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 # items over 10 What is the frequency of times the limit was exceeded by less than 4 items? ans = Enter an IntesNY or decimal number (more. Question Help: D Video
3. Below are the numbers of flights on time and delayed for Alaska Airlines at five airports in one month. On time 497 221 212 503 Seattle 1841 (a)Among the flights to Los Angeles, what percent of flights were delayed? (b)What percent of delayed flights were not flying to Los Angeles? Los Angeles Phoenix San Diego San Francisco Delayed 62 12 20 102 305
D1)
The average time that Italy commute to work is 23.15 minutes (Best 4 Tourist Places, June 15, 2020). The average commute times in minutes for 18 cities are given in Table 3.1. Table 3.1 City Time (minutes) Rome 24.9 Milan 26.8 Naples 26.2 Turin 28.1 Palermo 31.7 Genoa 25.8 Bologna 23.3 Florence 32.1 Bari 28.5 Catania 24.4 Verona 29.3 Venice 24.8 Messina 38.1 Padua 28.3 Trieste 28.4 Taranto 24.6 Prato 20.1 Modena 23.4 1) What is the mode for these 18 cities? 2) Find 28th and 77th Percentile of commute times for these 18 cities.
2. The following table shows the distribution of number of students per teacher in 80 Colleges. Determine the arithmatic mean: Students : 4 8 10 12 18 24 22 Frequency: 10 15 14 13 11 9.
The table shows data about student involvement in extracurricular activities at a local high school. Extracurricular Activities Involved in Not Involved in Activities Activities Totals Male 112 145 257 Female 139 120 259 Totals 251 265 516 P(femalel involved in activities)? 265 516 139 251 251 516 139 516
We are interested in looking at the effect of a baseball player’s free agent status on their salary. We look at 337 baseball players and categorize them as either having a high salary (above 2 million) or not, and as either being free agents or not. ------------------------------ You also wonder if having a high batting average affects the salary of baseball players. You classify all 370 baseball players as having a high batting average if it is over .300. 1. The given χ2test table gives many test statistics. The row we want to look at is labeled Pearson Chi-Square. Give the test statistic, the degrees of freedom, and the p-value. 2. At a significance level of .05, what can you conclude in the context of this problem?