Chapter 11: Q.33 (page 656)
Complete the table
Short Answer
The table is
Chapter 11: Q.33 (page 656)
Complete the table
The table is
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Get started for freeDetermine the appropriate test to be used in the next three exercises.
An archeologist is calculating the distribution of the frequency of the number of artifacts she finds in a dig site. Based on
previous digs, the archeologist creates an expected distribution broken down by grid sections in the dig site. Once the site has been fully excavated, she compares the actual number of artifacts found in each grid section to see if her expectation was accurate.
A market researcher wants to see if two different stores have the same distribution of sales throughout the year. What type of test should he use?
The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken to calculate the number of U.S. citizens working in one of several industry sectors over time. Table 11.17 shows the results:
We want to know if the change in the number of jobs is independent of the change in years. State the null and alternative hypotheses and the degrees of freedom .
A sample standard deviation of minutes is the same as a sample variance of __________ minutes.
Table contains information from a survey among participants classified according to their age groups. The second column shows the percentage of obese people per age class among the study participants. The last column comes from a different study at the national level that shows the corresponding percentages of obese people in the same age classes in the USA. Perform a hypothesis test at the % significance level to determine whether the survey participants are a representative sample of the USA obese population.
Age Class (Years) | Obese Expected (percentage) | Obese Observed (Frequencies) |
Table
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