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Question: Recent low-fare flights between Britain and eastern European destinations have brought large groups of English partygoers to cities such as Prague and Budapest. According to the New York Times, cheap beer is a big draw, with an average price of $1 as compared with $6 in Britain.6 Assume these two reported averages were obtained from two random samples of 20 establishments in London and in Prague, and that the sample standard deviation in London was $2.5 and in Prague $1.1. Conduct a test for equality of means using α = 0.05 and provide a 95% confidence interval for the average savings per beer for a visitor versus the amount paid at home in London.
the normality assumption states that the population of x and y scores form a bivariate two variable normal distribution
a sample of 21 of 180 funded projects revealed that 19 were valued at 17680 each and 2 were valued at 20320 each. from
According to the U. S. Census Bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States.
we wish to estimate the mean using a sample size of n = 49. Find the probability that we could be correct within 1kg/m 2 .
Find the mean d of the paired differences - Find the standard deviation sd of the paired differences - What assumptions must be made in order
Provide an example of three events that would be mutually exclusive. Are these events also exhaustive? Then, give an example of three events that would be exhaustive. Are these exhaustive events also mutually exclusive?
Distinguish between participant and nonparticipant observation; between concealed and nonconcealed observation.
Develop a Venn diagram to illustrate the data, hence use it to find the probability that a worker picked at random: (1) Does not speaker English, (2) Speak neither of the languages, (3) Speak French and Russian but not English.
At a 0.05 level of significance, determine if there is a significant difference in the mean weekly units of production for the three types of work schedules (perform all six steps of hypothesis testing and show the ANOVA table).
As of today, the interest rate in Countries X, Y, and Z, are similar. In the next month, Country X is expected to have a weak economy, while Countries Y and Z are expected to experience a 6% increase in economic growth.
A fashion student was interested in factors that predicted the salaries of catwalk models. She collected data from 231 models.
give two sets of four numbers that have the same mean but different median.give two sets of four numbers that have the
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