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Elementary school teachers , women compromise 80.3% of all elemenatry school teachers. In random sample of 300 elementary school teachers. What is the probability that less than three-fourths are women.
Based on these sample data, is it reasonable to conclude that one or more of these three age groups buys a disproportionate share of lottery tickets?
Auditor wants to be within 7% of true proportion when using 95% confidence level. How many files should auditor sample?
a. Counselor talking to a student: "To improve your science grade, Susie, you must establish better study habits."
Farmer Marc, a Shakespearean devotee, delivered a plea at the County Faire, asking three different groups to lend him unshelled corn.
Birth weights of full-term babies in a certain region are normally distributed with mean 7.125 lb and standard deviation 1.290 lb.
Create the 95% confidence interval for portion of respondents who feel president is doing a good job. Based on the intervalin part(a), It is sensible to conclude that majority.
Based on these results, does quality appear to be associated with price? What was the sample size used.
What does it mean if we have an alpha value of 0.05? How about if we have an alpha value of 0.10? Is this value set for us or do we as researchers choose it ourselves? If we do choose it, what criteria do we use? answer the questions and show all ..
What type of hypothesis test is needed? What distribution should be used? Why?
A hypothesis is being conducted. The p-value was found to be 0.0768. For which of the following levels of significance will the null hypothesis be rejected?
For the following cases, determine whether the sampling is dependent or independent. Explain your conclusion.
Seeds that germinated within 5 weeks after planting was recorded for each seed type. At the .01 level of significance, is the proportion of seeds that germinate dependent on the seed type?
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