Illustration 55. Fit a Poisson distribution to the following frequency distribution and estimate the total cost of corrections. No. of misprints on a page : No. of pages: Cost of Correction Per page (Rs.) 2 3 4 62 2.50 113 20 1.50 3 1 3.50 514
Q: There are 5000 observations in a data set. 10% of the data are “1”s, while the rest are “0”s. If we…
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Q: Consider the frequency distribution to the right. Complete parts (a) through (c) below. Value 621…
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Q: 450=0.310282 4s=0.322561 You are given the following values from a life insurance table: A52 =…
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Q: 9. For a population of birds, the average egg length is μ = 57mm with a = 2.4 mm. a. Calculate the…
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Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…
A: Solution: Given information: n= 984 Sample size supermarket shopper. X= 274 stock up
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- Assuming that workers' salaries in your company are uniformly distributed between $10,000 and $50,000 per year. Find the amount of money that 35% of the workers make more than that value?1. Find the percentage of N.d. observations with a zz-score between z1= -3.04 and z2 = 2.85. Give your answer to two decimal places. 2. Find the proportion of N.d. observations with a zz-score between z1= -2.95 and z2 = 0.70. Give your answer to four decimal places.For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a marketing survey, a random sample of 990 supermarket shoppers revealed that 260 always stock up on an item when they find that item at a real bargain price. (a) Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Enter a number. Round your answer to four decimal places.)________________ (b) Find a 95% confidence interval for p. (For each answer, enter a number. Round your answers to three decimal places.)lower limit _____________ upper limit _____________
- Q2. A laundry for car wash found that the average, for small size car, cleaning time is 5 mins in the morning and 6.5 mins at evening time when a sample of size 30 is taken at the two time periods. From the previous record, the laundry manager knew that car oj = 2 mins for the morning shift and oz = 2.5 mins for morning and evening repectively. Find the interval estimate for 4 - 42 with 90% confidence level.9. Frequency distributions may be compiled for variables measured at which level? a. nominal b. ordinal c. interval-ratio |d. all of the above |10. Cumulative frequencies and cumulative percentages allow a rescarcher to a. be sure the column totals are correct b. tell at a glance how many cases fall above or below a given category |c. show the accuracy of his or her findings d. all of the above 11. For a single variable measured at the nominal level, an appropriate and helpful graph to create would be a. a pie chart b. a histogram c. a frequency polygon |d. a bivariate table 12. If you were studying the color of movie stars' eyes as a variable, what measure of central tendency would be most appropriate to summarize data? a. median b. mode c. mean d. none of the above |13. If you have an even number of scores in a distribution and you arrange them from high to low, the median is a. the middle score |b. the average of the two middle scores c. the average of the highest and lowest scores…Below is a histogram of the current prices of different varieties of face masks, with a skewness of measure of -1.380. Based on your knowledge of graph shape, approximate the mean (average) cost of a box of masks. Count 15 10 5 0 T 20 37$ per box of 24 $8 per box of 24 49$ per box of 24 24$ per box of 24 Current price of a box of 24 facemasks 25 30 Price 35 40 45
- a) The average temperature (Centigrade) in London varies from 14C to 31C during the year. i. Calculate indices based on March, base = 100 ii. What is the %age variation between the highest and the lowest temperatures? Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Temp C 15 22 19 24 29 28 31 28 27 22 18 14 Index b) Below are the no of customers, visiting a local Tesco Express, in the first week of holiday season. The store manager would like to avoid stock out in the busy period. Provide forecast of sales on Saturday next week, using 3 point moving average and seasonal variation. Assume same seasonal variation next period.For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a marketing survey, a random sample of 994 supermarket shoppers revealed that 272 always stock up on an item when they find that item at a real bargain price. (a) Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Enter a number. Round your answer to four decimal places.) (b) Find a 95% confidence interval for p. (For each answer, enter a number. Round your answers to three decimal places.)lower limit upper limit Give a brief explanation of the meaning of the interval. We are 5% confident that the true proportion of shoppers who stock up on bargains falls within this interval.We are 95% confident that the true proportion of shoppers who stock up on bargains falls outside this interval. We are 95% confident that the true proportion of shoppers who…Today, the waves are crashing onto the beach every 4.3 seconds. The times from when a person arrives at the shoreline until a crashing wave is observed follows a Uniform distribution from 0 to 4.3 seconds. Round to 4 decimal places where possible. 1. 66% of the time a person will wait at least how long before the wave crashes in?
- Average monthly wages (per employee) in 4 sectors of an economy are as follows: industry: 2000 dinars, building: 2200 dinars, agriculture: 1500 dinars, services: 1800 dinars. Number of people employed in the four sectors are 5 million, 2 million, 6 million, and 2 million, respectively. Using the concept of harmonic mean compute the average monthly wages in the economy under consideration.For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a marketing survey, a random sample of 992 supermarket shoppers revealed that 274 always stock up on an item when they find that item at a real bargain price. (a) Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Enter a number. Round your answer to four decimal places.) (b) Find a 95% confidence interval for p. (For each answer, enter a number. Round your answers to three decimal places.)lower limit upper limit Give a brief explanation of the meaning of the interval. We are 95% confident that the true proportion of shoppers who stock up on bargains falls within this interval.We are 5% confident that the true proportion of shoppers who stock up on bargains falls above this interval. We are 5% confident that the true proportion of shoppers who…The following table shows a sample of room rates for a 100 room resort hotel in Nova Scotia for the time period Jan. 1 to Dec. 2003. Note that 1/1-7/3 means January 1 to March 7, 2003. Be sure to scroll down to see the bottom of the rate table. 2003 Room Rates A Oceanfront 1 double bed Oceanfront 2 double beds Oceanfront Effic, 2 double beds 2 room suite 3 double beds Oceanfront Suite 3 double beds Extra Person B C D E 1/1 - 7/3 75 85 105 120 140 5 8/3 30/3 125 135 155 175 200 8 31/3 - 31/5 85 115 130 150 5 1/6 -30/6 100 110 130 150 175 5 1/7 2/9 -1/9 -8/10 150 95 180 200 225 10 105 125 140 165 7 9/10 -1/12 85 95 115 130 5 2/12 -20/12 75 85 105 120 140 5 21/12 - 31/12 125 135 155 175 200 10 IMPORTANT: Please omit the dollar signs in all answers. Note: Suites have 3 beds. a. For the 9 time periods, what was the mean extra person rate? b. (i) This hotel has 20 type A rooms, 15 type B, 30 type C, 25 type D and the remainder are type E. If the hotel was fully booked (with no extra people…
