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1. In an experiment on the uptake of solutes by liver cells, a researcher found that six determinations of the radiation, measured in counts per minute after 20 minutes of immersion, were:
2728 2585 2769 2662 2876 2777
Construct a 99% con?dence interval for the population median and interpret its meaning.
2. The nominal resistance of a wire is 0.20 ohm. A testing of the wire randomly chosen from a large collection of such wires yields the following resistance data.
0.199 0.211 0.198 0.201 0.197 0.200 0.198 0.208
Obtain a 95% con?dence interval for the population median.
In a national wide survey a researcher expects 30 percent of the population will agree with an value statement. He wishes to have less than 2% error and 95% confident. What sample size is needed?
You have 4 jars. In the largest jar you have three balls numbered 1 to 3. Then you have 3 colored jars. Jar 1 has a red ball and two orange balls.
What is the probability that a randomly selected student has an ACT Math score less than18? What is the probability that a random sample of 10 ACT test takers had a mean ACT Math score less than 18?
How many returns must he get in order to know the proportion that will support the bond issue within a standard error of 5% and a confidence level of 95%?
Find the test statistic value for testing the equality of population means of the two samples.
At the .05 significance level, can Macaray conclude that the population means are different? Note that you should show all 5 steps in the test of hypothesis.
according to the u.s. bureau of labor statistics self-employed persons with home-based businesses work an average of 23
Question A: What is the expected amount Daniel james will have to pay to mobil in claims? What is the likelihood that Daniel james will actually lose less than the expected amount?Given that Daniel james suffers a loss, what is the likelihood that it..
in 2011 a sruvey by the american bar association indicated that the average yearly income of attorneys was 110000. a
The superintendent of a printing plant has selected a random sample of 100 rolls of paper from a large shipment. The average length of the sample rolls is 416 feet, with a variance of 2704 feet.
Assume that the population of heights of treated plants is normally distributed with mean. Based on the sample, can it be concluded that is different from centimeters? Use the level of significance. Perform a two-tailed test. Then fill in the table..
What is the stock's value at it's highest on 15 days of the year? (Assume that there are 240 trading days in a year).
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