1. 50 Companies percentages of revenues spent on R&D are given below. 5.2 6.9 7.8 8.8 10.5 10.5 5.6 6.9 7.9 5.9 7.1 8. 9.2 10.6 6. 7.1 8. 9.4 11.1 6.5 7.2 8.1 9.5 11.3 6.5 7.2 8.2 9.5 11.7 6.5 7.5 8.2 9.6 12.0 13.2 13.5 13.5 6.6 7.5 8.2 9.7 6.8 7.7 8.4 9.9 6.9 7.7 8.5 10.1 Find the following • Mean = • Range= • Lower Quartile= • Inter Quartile Range= • Standard Deviation= Median= Mode= Variance= Upper Quartile= First SD interval, Number of data % of data II I| ||
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- A. A major credit card company has determined that customers charge between $100 and $1100 per month. Given that the average monthly amount charged is uniformly distributed, answer the following questions. What is the average monthly amount charged? _______ Omit the dollar sign in your answer, if necessary, round to the nearest dollar B. A major credit card company has determined that customers charge between $100 and $1100 per month. Given that the average monthly amount charged is uniformly distributed, answer the following questions. What percent of monthly charges are between $600 and $889? Round to ONE Decimal Point, express as a percentFOUR The following are the P/E ratios (price of stock divided by projected earnings per share) for 16 banks.20, 14, 19, 25, 19, 22, 31, 29, 14, 18, 15, 20, 22, 18, 18, 29Find 10th and 75th percentiles for these ratios.6. Compute Cumulative frequencies and cumulative percentages on the information below Cumulative Frequencies and Cumulative percentages Cumulative f Cf Percentages Percentage 67-71 2 62-66 1 57-61 2 52-56 4 47-51 6 42-46 7 37-41 8 32-36 5 27-31 2 22-26 0 17-21 2 12-16 1 ______ N= 40 ______________________
- Determine whether the following statements use the area of descriptive statistics or inferential statistics. 1. A bowler wants to find his bowling average for the past 12 games. 2. A manager would like to predict based on previous years' sales, the sales performance of a company for the next five years. 3. A politician would like to estimate, based on an opinion poll, his chance for winning in the upcoming senatorial election. 4. A teacher wishes to determine the percentage of students who passed the examination. 5. A student wishes to determine the average monthly expenditure on school supplies for the past five months.A survey of a group's web habits for the past month obtained the following information.31% visited Facebook.33% visited LinkedIn.33% visited Google.12% visited Facebook and LinkedIn.12% visited Facebook and Google.16% visited LinkedIn and Google.7% visited all three sites.Find the percentage that visited none of these three sites last month.Calculate median from the following series : 5 men get less than Rs. 5 12 men get less than Rs. 10 22 men get less than Rs. 15 30 men get less than Rs. 20 36 men get less than Rs. 25 40 men get less than Rs. 30
- A survey of a group's web habits for the past month obtained the following information. 44% visited Facebook. 41% visited Linkedin. 31% visited Google. 22% visited Facebook and Linkedin. 15% visited Facebook and Google. 15% visited Linkedin and Google. 8% visited all three sites. Find the percentage that visited none of these three sites last month.1. Calculate the incidence rate from June 1, 2018 to May 31, 2019 using the midpoint population as the denominator. Express your answer as a percentage. 2. Calculate the point prevalence on December 1, 2018. Express your answer as a percentage. 3. Calculate the period prevalence from June 1, 2018 to May 31, 2019. Express your answer as a percentage.The distribution of observed scores (in percentages) in a Chemistry final examinations were as follows: 67, 71, 73, 76, 97, 79, 82, 83, 85, 87, 88, 24, 58, 61, 88, 92, 93, 94 The lowest score on the final exam was 24. The highest score on the exam was 97. 25% of the students scored a 70 or below. 50% of the students scored above an 85.5. 75% of the students scored at most 89. We can also say that 25% of the students scored at least an 89. The lowest score on the final exam was 24. The highest score on the exam was 97. 25% of the students scored a 70 or below. 50% of the students scored above an 82.5. 75% of the students scored 89 or below. We can also say that 25% of the students scored at least an 89. The lowest score on the final exam was 24. The highest score on the exam was 97. 25% of the students scored a 70 or below. 60% of the students scored above an 82.5. 75% of the students scored 89 or below. The lowest score on the final exam was 24.…
- The number of adult Americans who smoke continues to drop. The table contains estimates of the percentages of adults (ages 1818 and over) who were smokers in the years between 1965 and 201715.and 201715. ???? ?Year � ??????? ?Smokers � 1965 41.94 1970 37.4 1974 37.1 1978 34.1 1980 33.2 1983 32.1 1985 30.1 1987 28.8 1990 25.5 1993 25.0 1995 24.7 1997 24.7 1999 23.5 2001 22.8 2002 22.5 2004 20.9 2006 20.8 2008 20.6 2010 19.3 2012 18.1 2014 16.8 2017 14.0 According to your regression line, how much did smoking decline per year during this period, on the average? Give your answer to three decimal places. average smoking decline: percentage pointsCan smoking negatively affect one's ability to become pregnant? A study collected data on 654 women who had gone off birth control with the intention of becoming pregnant. Smokers were defined as those who smoked at least one cigarette a day prior to becoming pregnant. The results of the study are summarised in the table below. Smoker Non-smoker Total Pregnant 27 195 222 Not pregnant 100 332 432 Total 127 527 654 Calculate the following proportion to two decimal places (2dp), not as a percentage. What proportion of the women that were not pregnant, were also smokers?Can smoking negatively affect one's ability to become pregnant? A study collected data on 654 women who had gone off birth control with the intention of becoming pregnant. Smokers were defined as those who smoked at least one cigarette a day prior to becoming pregnant. The results of the study are summarised in the table below. Smoker Non-smoker Total Pregnant 27 195 222 Not pregnant 100 332 432 Total 127 527 654 Calculate the following proportion to two decimal places (2dp), not as a percentage. What proportion of the women were smokers given they were pregnant?