Unformatted text preview: Number Of Miles Driven 85,092 39,323 64,342 74,276 74,425 37,831 77,539 32,609 89,641 61,978 66,998 67,202 89,341 88,798 59,465 94,219 67,998 40,001 118,444 73,341 77,437 116,803 59,817 72,069 53,500 85,288 32,534 92,857 101,769 25,066 79,294 138,114 64,090 63,436 95,774 77,098 64,544 53,402 32,464 65,605 121,352 69,922 86,813 85,586 59,902 85,861 69,568 35,662 116,269 82,256 Transmission Failure data Mean Standard Error Median Mode Standard Deviation Sample Variance Kurtosis Skewness Range Minimum Maximum Sum Count Confidence Level(95.0%) Coeff of Var 73,340.300 3,521.210 72,705 #N/A 24,898.715 619,946,014.051 0.167 0.260 113,048 25,066 138,114 3,667,015 50 7,076.136 33.95 1. Summary of Data: The number of miles driv of 73,340 with a standard deviation of 24,899. range of miles driven is rather large, from 25,0 the standard deviation indicates a relatively lo is only 33.9% of the mean). The median miles little skewness in the data. 2. 73,340.3007076.1366= 66,264.164 73,340.300+7076.1366= 80,416.436 It is estimated with 95% confidence that your variation in the transmission failure data (stan is about the same as the mean miles driven in will fail when you reach a mileage between 66 It is estimated with 95% confidence that the m 95% CI Estimates Sample Mean Sample Std Deviation Sample Size Standard Error Critical t Value Margin of Error Lower Bound Upper Bound transmission failure is 73,340 miles with a ma 7,076 miles. 3. Based on the data sample collected for the 73,340.300 24,898.715 50 3,521.210 2.01 7076.14 66,264.163 80,416.437 interval estimate 19 cars experienced transmi before reaching 66,438 miles. This is 38% of t population of 50. Additionally, 6 of these 19 ca reach 40,000 miles before transmission failure 4. n= (z.025*s/E)2 = (1.96*24,899/5000)2 = 9 repair records. 5. We believe that it would be useful to know t of the cars in the sample this could assist in i trends among manufacturers and further defi for owners of particular models. It would also understand if the transmissions are automatic What state the car registered in because cold more on the transmission. Lastly, was the car commercial usage or personal and was it well e number of miles driven has a mean d deviation of 24,899. Although the rather large, from 25,066 to 138,114 ndicates a relatively low degree of sion failure data (standard deviation mean miles driven indicating very n). The median miles driven, 72,705 ta. = 66,264.164 = 80,416.436 confidence that your transmission a mileage between 66,262 and 80,416. confidence that the mean for 3,340 miles with a margin of error of mple collected for the 95% confidence experienced transmission failure miles. This is 38% of the sample onally, 6 of these 19 cars didn't even e transmission failure. 96*24,899/5000)2 = 95.262 or 95 ld be useful to know the Make/Model e this could assist in identifying urers and further define expectations models. It would also be useful to missions are automatic or manual. ered in because cold weather wears n. Lastly, was the car used for rsonal and was it well maintained. ...
View
Full
Document
This note was uploaded on 06/30/2011 for the course ECON 2300 taught by Professor Dodonova during the Spring '08 term at Kennesaw.
 Spring '08
 DODONOVA

Click to edit the document details