A. Given u = 200 and o = 24, compute for the corresponding z-scores of the following raw scores. Round your answer up to two decimal places. 1. x= 150 2. x= 230 3. x= 260
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- Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector measures 10 spacers and records the following thicknesses: 0.372" 0.376" 0.379" 0.375" 0.370" 0.373" 0.377" 0.378" 0.371" 0.380" Which spacers are defective (above the maximum limit or below the minimum limit)? All dimensions are in inches.Given a 95% C.I. = (34.14 mm, 36.02 mm) for a sample of Wooly Bear caterpillar lengths (preceding problem), address the following. Based upon the above information, I am _____ % confident that the 95% C.I. contains the sample mean.given H a: u>85 and P=0.007. do you reject or fail to reject H0 at the 0.01 level of significance?
- The claim is that for 12 AM body temperatures, the mean is \mu > 98.6 The sample size is n = 3 and the test statistic is t= 1.887A researcher obtains M = 45 with SS = 250 for a sample of n = 10 women and M = 49 with SS = 270 for a sample of n = 10 men. If the two samples are used to evaluate the mean difference between the two populations, what value will be obtained for the t statistic?The number of contaminating particles on a silicon wafer prior to a certain rinsing process was determined for each wafer in a sample of size 100, resulting in the following frequencies: Number of particles 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Frequency 1 3 3 12 11 15 18 10 11 4 5 3 1 2 1 (a) What proportion of the sampled wafers had at least one particle? At least five particles? (Round your answers to two decimal places.) at least one particle Answer:__________ at least five particles Answer:__________ (b) What proportion of the sampled wafers had between five and ten particles, inclusive? Strictly between five and ten particles? (Round your answers to two decimal places.) between five and ten particles, inclusive Answer:___________ strictly between five and ten particles Answer:___________ (c) Draw a histogram/bar chart using relative frequency on the vertical axis.Answer:How…
- Given the raw score of 30 students in Science as of the first sem as follows: 51.6 53.2 53.9 56.8 60.6 46.7 46.8 48.1 48.7 50.2 29.9 32 32.3 32.3 37 41.1 41.2 42.5 43.9 51.2 51.2 51.4 40.2 40.6 23.3 29.5 45.8 50.4 50.9 46.1 Answer the following questions: If Justin got a raw score of 46.8, what percentile corresponds to his raw score (round down the percentile as 1st, 2nd, 40th ...) What is the mean raw score? What is the value of the 80th percentile? What is the standard deviation of the raw data?STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Given are data from students doing a laboratory exercise. 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. PLAN: We will estimate ? by giving a 98% confidence interval. SOLVE: Find the sample mean ?¯ . (Enter your answer rounded to the nearest whole number.) ?¯= Give a 98% confidence interval, [???,ℎ??ℎ] , for the mean load required to pull the wood apart. (Enter your answers rounded to the nearest whole number.) ???=…A population has u = 50.Whixh value of o would make x=55 a central,representative score in the population distribution? o=1 o=6 o=2 impossible
- The weights of radish seeds are normally distributed, with µ = 0.12 g and σ = 0.02 g. What is the z-score of a radish seed that weighs 0.093 g? If the contents of a seed packet weighs 30.0 g, approximately how many seeds are in it? Approximately how many seeds in the packet weigh between 0.08 g and 0.16 g.?The claim is that for a smartphone carrier's data speeds at airports, the mean is μ=13.00 Mbps. The sample size is n=29 and the test statistic is t=1.067. P-value=? (Round to three decimal places as needed.)