On the Planet Zog, 50% of the population like watching sport, 60%of the population like listening to music, and 30% dislike sport and also dislike music. What is the percentage that like sport but dislike music?
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On the Planet Zog, 50% of the population like watching sport, 60%of the population like listening to music, and 30% dislike sport and also dislike music. What is the percentage that like sport but dislike music?
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- Several years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 62% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is. (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…Cricket’s is a popular club for students from the nearby college. The club had 840 customers during Labor Day weekend. If 487 of those customers were under 26 years of age, find the percent under 26.In 2020, there were 7.8 billion people in the world, and 5.16 billion had cell phones.¹ Approximately % of the people on Earth do not have cell phones in 2020.
- According to recent data, 12 percent of people are left handed. In a sample of 20 people, how many would you expect to be left handed? Give the exact number.One of the basketball coaches at Cypress College wanted to see if Cypress College's Strength & Exercise class was increasing the weight that a player could bench press. The basketball coach randomly selected some of his players and determined how much they could bench press before taking the class. Then after completing the class, he again determined the weight that they could now bench press. The data for these players is given in the table below. Test whether the Strength and Exercise class is increasing the amount of weight that the players can bench press at the a=0.05 level of significance. Player Player 1 Player 2 Player 3 Player 4 Pounds Lifted Before 205 241 338 368 [ Select] ANOVA 2-SampFTest 252 330 360 2-SampTTest X^2-Test 2-PropZTest T-Test [ Select ] P-Value [ Select] ConclusionCity crimes records show that 20% of all crimes are violent and 80% are nonviolent. Ninety percent of violent crimes are reported versus 70% of nonviolent crimes. What is the overall reporting rate for crimes in the city?
- What proportion of the general population has an IQ of 70 or less?According to recent data, 21 percent of people are left handed. In a sample of 100 people, how many would you expect to be left handed? Give the exact number.Bicycling, the world's leading cycling magazine, reviews hundreds of bicycles throughout the year. Their "Road-Race" category contains reviews of bikes used by riders primarily interested in racing. One of the most important factors in selecting a bike for racing is the weight of the bike. The following data show the weight (pounds) and price ($) for 10 racing bikes reviewed by the magazine.† Brand Weight Price ($) FELT F5 17.8 2,100 PINARELLO Paris 16.1 6,250 ORBEA Orca GDR 14.9 8,370 EDDY MERCKX EMX-7 15.9 6,200 BH RC1 Ultegra 17.2 4,000 BH Ultralight 386 13.1 8,600 CERVELO S5 Team 16.2 6,000 GIANT TCR Advanced 2 17.1 2,580 WILIER TRIESTINA Gran Turismo 17.6 3,400 SPECIALIZED S-works Amira SL4 14.1 8,000 (a) Use the data to develop an estimated regression equation that could be used to estimate the price for a bike given the weight. (Round your numerical values to the nearest integer). ŷ = ?? (b) Compute r2. (Round your answer to three decimal…
- In 2016 the Better Business Bureau settled 84% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.84, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(p) (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion (to 4 decimals)? probability : = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2…A group of 500 students take a survey about distance learning. 150 prefer distance learning. What is the proportion of students that prefer distance learning.Suppose that the results of a survey show that 53% of people consider summer as their favorite season. How many people should be surveyed in order to have a margin of error of 6%? Round up to the nearest whole number, if necessary. In order to have a margin of error of 6%, people should be surveyed.
