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1. According to The Economist, 55% of all French people of voting age are opposed to the proposed European constitution.13 Assume that this percentage is based on a random sample of 800 French people. Give a 95% con?dence interval for the population proportion in France that was against the European constitution.
2. According to BusinessWeek, many Japanese consider their cell phones toys rather than tools.14 If a random sample of 200 Japanese cell phone owners reveals that 80 of them consider their device a toy, calculate a 90% con?dence interval for the population proportion of Japanese cell phone users who feel this way.
pieces of vulcanite were examined according to porosity and dimensional defects and the results are shown below. test
Problem: Find the probability and interpret the results. If convenient, use technology to find the probability. During a certain week the mean price of gasoline was $2.707 per gallon. A random sample of 38 gas stations is drawn from this populatio..
If the probability of making a two point shot is greater than the probability of making a three point shot, why do coaches allow some players to shoot the three point shot if they have the opportunity? Use expected value to explain your answer.
a random sample of 45 door-to-door encyclopedia salespersons were asked how long on average they were able to talk to
Assume you randomly sample one mouse from the colony. The probability his age will be between 55 and 70 days is?
An instructor claims the average time to take a statistics test is greater than 39 min. As, if a sample of 33 students took 43 min. is the instructor's claim true?
a standard deck of cards contains 52 cards. one card is selected from the deck.a compute the probability of randomly
A student scores 91 on the midterm exam for physics. Assume the class scores are normally distributed, with a mean of 65 and standard deviation of 15. Into what percentile does this student fall?
Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
Calculate the standard deviation of conductance
At the .01 significance level, is there a difference in the use of the four entrances?
Now imagine repeating the survey many, many times, each time recording a different sample mean commute distance. In the long run, a histogram of these sample means represents?
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