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1. the purpose behind constructing a frequency or relative frequency distribution.
2. Explain how to compute the relative frequency and percent frequency for each class if you are given a frequency distribution.
3. Find an example of a pie chart or bar chart in a newspaper or magazine. Copy it, and hand it in with a written analysis of the information conveyed by the chart.
Suppose you repeatedly play hands of Texas Hold'em
American Theaters knows that a certain hit movie ran an average (μ) of 84 days in each city, and the corresponding standard deviation (σ) was 10 days. The manager of the southeastern district was interested in comparing the movie's popularity in his ..
1. a university has been tracking the percentage of alumni giving to its annual fund each for the past 10 years. the
Explain what the mean, m, tells us about a normal curve. If the random variable x is normally distributed, what percentage of all possible observed values of x will be.
Explain how the chi-square tests differ from parametric tests (such as t tests or ANOVA) with respect to the hypotheses, the data, and the assumptions underlying the test.
Examine the hospital database. Suppose you want to “prove” that the average hospital in the United States averages more than 700 births per year. Use the hospital database as your sample and test this hypothesis. Let alpha be .01. On average, do hosp..
Test of two means.
The College Board finds that the distribution of students
State the statistical assumptions of this test and using the data set and variables you have selected, use SPSS to calculate the Mean and Median.
Heights of swedish men follow a normal distribution with mean 72 in and standard deviation of 5 in. How high must a doorway be so that 90% of swedish men can go through without having to bend?
A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action
Explain what it means for two events to be mutually exclusive; for N events. If A and B are events, define (in words) A, A U B, A n B, and A n B.
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