by ella | Feb 26, 2025 | Statistics
A sample of 100 widgets from the Acme production line shows that the average lifespan of these parts is 900 hours. The standard deviation of production has been 200 hours historically and is known to be normally distributed.a) Give a point estimate of lifespan of all...
by ella | Feb 26, 2025 | Statistics
Baseball Fans- from the attached spreadsheet, choose a player and download his batting data from www.fangraphs.com for the past five years. Organize the data into classes. Use bin size of 5 for all categories except ISO, BABIP, AVG, OBP, SLG, WOBA. (use bin size of...
by ella | Feb 26, 2025 | Statistics
A quality control expert is called in to determine whether a newly installed machine is meeting quality standards in producing a particular cotton cloth according to the specifications set by the manufacturer. The mean warp-breaking strength of this particular cotton...
by ella | Feb 26, 2025 | Statistics
Suppose a random sample of 49 is selected from a population with a standard deviation of 14. If the sample mean is 125, the 99% confidence interval to estimate the population mean is between ____________ .120.00 and 130.00119.85 and 133.15119.85 and 130.15119.85 and...
by ella | Feb 26, 2025 | Statistics
Week 4 Confidence Intervals and Chi Square (Chs 11 – 12) Let’s look at some other factors that might influence pay. For question 3 below, be sure to list the null and alternate hypothesis statements. Use .05 for your significance level in making your...
