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Q1) Metro Real Estate Association is making a pamphlet that they think might be of interest to prospective homebuyers in Middletown and Brockton areas of city. 1 item of interest is number of year's children stays in same district for schooling. Sample of forty households with school-aged children in Middletown was arbitrarily chosen. Mean length of time in district was 7.6 years, with standard deviation of 2.3 years. Sample of 55 households in Brockton disclosed mean length of time in district was 8.1 years, with standard deviation of 2.9 years. At the 0.05 level of significance, can we conclude Middletown students remained in their districts less time than Brockton students? Make use of 5-step hypothesis testing procedure.
Make use of normal probability distribution features of EXCEL to help determine the probability.
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
What happens to the probability of getting exactly 50% heads?
Distinct random variable
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
Problems on Sampling Variability and Standard Error and Confidence Intervals
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
The researcher computes the sum of squares for groups as SSG = 40030 and the sum of squares for error as SSE = 414780. The numerical value of the ANOVA F statistic is
By using the maximax criterion, what decision should be made by the decision maker?
Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?
A scientist examined the effect of temperature and catalyst on the yield of a reaction. He ran the experiment at both 150° and 200°C with two types of catalyst.
Below is a plot of the Olympic gold medal winning performance in the high jump (in inches) for the years 1900 to 1996.
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