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A sociologist wishes to determine whether there is a relationship between the sex of a person and the amount of alcohol consumed. A random sample of 100 people is selected and the following data are obtained.
Alcohol consumption Total:
Sex Low Moderate High Male 25 18 20 Female 8 19 10 Total
At α = 0.10, can the researcher conclude that alcohol consumption is related to sex? What kind of Chi-Square test is this?
Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?
Determine the percent of the days is the price between $38.00 and $40.00?
Using an appropriate statistical test determine if there is a significant association between gender and satisfaction with the new initiative.
Complete the ANOVA table. Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
The remaining 5 were not given the overview. Here are the scores for students in each group:
How many students should be surveyed to estimate the mean score within 25 points with 90% confidence?
the probability that a household is both prosperous and educated is P (A and B) = 0.082. What is the probability P (A or B) that the household selected is either prosperous or educated.
Determine 80% confidence interval for average weights of Allen's hummingbirds in study regions. Determine the margin of error?
Compute the correlation among the variables. Describe perfect correlation also negative correlation. Utilize the following data to answer questions related.
Describe what do you mean by terms 'false positive" and " false negative".
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
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