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Internet use. The World Bank collects data on many variables related to development for countries throughout the world.37 One of these is Internet use, expressed as the number of users per 100 people. The data file for this exercise gives this variable for 182 countries. Use graphical and numerical methods to describe this distribution. Write a short report summarizing what the data tell about worldwide Internet use
Distinguish between the null hypothesis and the research hypothesis. When does the researcher decide to reject the null hypothesis?
What was the explanatory variable? The explanatory variable is the number of students taking a first year seminar course for pre-health professional majors.
You want to ensure that a student who randomly guesses on each question will obtain an expected score of zero. How can you accomplish this?
i. Analyze→General Linear Model→Univariate ii. Move your dependent measure into the Dependent Variable window. iii. Move your independent variables into the Fixed Factor(s) window.
A standard IQ test has mean of 98 and a standard deviation of 16. We want to be 99% certain that we are 8 IQ points of the true mean. Determine the sample size.
Internet is 13.4 hours per week, with the sample standard deviation of 6.8 hours. Determine the 95 percent confidence interval for mean time Wired subscribers spend on Internet.
1. a researcher for reasons passing understanding wishes to assess the association between gender and total cholesterol
The Warren County Telephone Company claims in its annual report that "the typical customer spends $70 per month on local and long-distance service.
The weather in London can be summarised as: if it rains one day there's a 70% chance it will rain the following day; if it's sunny one day there's a 40% chance it will be sunny the following day. Assuming that the prior probability it rained yest..
An independent testing services road-tested 36 of the automobiles.
computing the probability values using normal distribution.the distribution of scores on the sat is approximately
there is a claim that a certain method of gender selection increases the likelihood of a baby girl the probability of a
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