Chapter 9, Problem 9.73CRP

In what percentile is the 1980 alcohol consumption per capita in the United States? (Round to the nearest percent.)

The NAEP music assessment scores for eighth grade students are approximately N (150, 35). Find the z-scores by standardizing the following scores: 150, 140, 100, 180, and 230. The percentile score is the proportion of students who would score LESS THAN OR EQUAL TO the score for the individual student. Compute the percentile scores for the five scores.

How long are resale houses on the market? Suppose that in a survey reported that in Thunder Bay, resell houses are on the market for average of 115 days. Of course the length of time varies by market. Suppose random sample of 6 houses in Thunder Bay and 4 houses in Moncton that are up for sale are traced. The data shown here represent the number of days each house was on the market before being sold. Use the given data and a 5% level of significance to determine whether the population varience for the number of days until resale are different in Thunder Bay than in Moncton. Assume the numbers of days that resale houses are on the market are normally distributed. Thunder Bay: 132, 138, 131, 127, 99, 126 moncton: 118, 85, 113, 81 please find:  test statistic population (one, two or multiple) null H0 null HA graph (right, left or two tailed)  distrivution ( z, t , x^2 or F) left and right critical value calculated value and whether it is ( z calculated, t calculated, x^2 calculated and F…

Calculate the 60th percentile of the data shown x 9.4 9.8 15.3 19.2 20.5

what z value correlates to 98.96% under  the curve

Use the five-step procedure to test the research hypothesis that the mean weight in men in the United States in 2006 is more than the mean weight reported in 2002. In 2002, the mean weight was reported to be 191.  Sample data from 2006: ◦n = 100 ◦X ̅ = 192.1 ◦s = 25.6

Calculate t for a comparison for repeated-measures data?

Find the z-score that corresponds to the 63rd percentile

A random sample of soil specimens was taken from a large geographic area. The specimens can be assumed to be independent. The amount of organic matter, as a percent, was determined for each specimen. The data are below:0.14, 0.32, 1.17, 1.45, 3.5, 5.02, 5.09, 5.22A soil scientist wants to know whether the population mean percent organic matter is different than 4%. Asignificance level of α = 0.05 is chosen. (a)  State hypotheses appropriate to the research question. (b)  Graph the data as you see fit. Why did you choose the graph(s) that you did and what does it (do they) tell you? (c)  Regardless of your conclusion from (b), use the bootstrap to perform a test of the hypotheses you stated in (a). Use B = 8000 resamplings. Compute the p-value, and make a reject or not reject conclusion. Then state the conclusion in the context of the problem. In other words, does it seem the mean organic matter level is different than 4%? (d)  Regardless of your conclusion from part (b), use a T…