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Question: Worldwide toy sales. Around the world, toys are sold through different channels. For example, in some parts of the world toys are sold primarily through large toy store chains, while in other countries department stores sell more toys. The table below shows the percentages, by region, of the distribution of toys sold through various channels in 1999.
a) What percent of all toys sold through department stores were sold in Europe?
b) What percent of all toys worldwide were sold through catalogs?
c) Compare the distribution of channels for Europe with those for North America.
d) Summarize the distribution of toy sales by channel in a few sentences.
Standard deviation is $0.10. At α = 0.01, is there significant difference in price? Determine the 99% confidence interval of the difference in the means.
What information is obtained from measurements on an interval scale compared to measurements on an ordinal scale. What information is obtained from measurements on a ratio scale compared to measurements on an interval scale?
Using the appropriate statistical table, what is the most accurate statement we can make about the p-value for this test?
Suppose that you are a regional director of an IRS office and that you are charged with sampling 1% of the returns with gross income levels above $15,000. How might you go about this? Would you use random sampling? How?
1. create the data set.a. using the activity 6a.sav file as a starting point create a new dataset that you can use with
To prepare: Think about examples of how individuals of various ages use probability to make decisions, and decide which age group you will write about in your discussion response.
a study showed that 36 out of 120 students of usc watched the football game between usc and usf. which one can be a
Give an example of a function using a set of at least 4 ordered pairs. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and 5.
Ford Taurus travels 21 mi. while consuming exactly 1 gallon of gas. You developed a modification to the engine you believe increases the distance. If you want to justify your claim of increased mileage by using a hypothesis test
In Problem 10.12.1, we found that passing a stationary white noise process through an integrator produced a nonstationary output process Y(t). Does this example violate Theorem 11.2?
Radioactive decay. An experiment was conducted using a Geiger-Mueller tube in a physics lab. Geiger-Mueller tubes respond to gamma rays and to beta particles (electrons). A pulse that corresponds to each detection of a decay product is produced, a..
If the correlation between reading achievement and math achievement in the population of fifth graders were 0.60, what would be the probability that in a sample of 28 students, the sample correlation coefficient would be greater than 0.65?
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