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Please use the five-step process for hypothesis testing
The Connecticut Board of Education is concerned that first year female high school teachers are receiving lower salaries than their male counterparts. Two independent random samples have been selected: 830 observations from population 1 (female high school teachers) and 810 from population 2 (male high school teachers). The sample means obtained are X1(bar) = $46,000 and X2(bar) = $47,000. It is known from previous studies that the population variances are 4.5 and 5.0 respectively. Using a level of significance of .01, is there evidence that the first year female high school teachers are receiving lower salaries? Fully explain your answer.
Testing for two Proportions - Is the difference between the averages statistically significant?
Critically illustrate out the characteristics of a standard normal distribution? Can two distributions with the same mean and different standard distributions be considered normal?
Assume that the distribution of heights of adults American normally distributed, with mean 69 inches and standard deviation 2.8 inches.
Index number acts as a barometer for measuring the value of money. What are the characteristics of an index number? State its utility.
Suppose a wildlife service wishes to estimate, with 99% confidence, the mean number of days of hunting per hunter for all licensed hunters in the state during a given season, with a bound on the error of estimation equal to 2 hunting days.
Given the following frequency distribution, find out the mean, variance, and standard deviation.
Determine the probability that mean height of random sample of 100 women is greater than 66 inches?
Calculated test statistic, decision about the null hypothesis interpretation of results, and a list of references consulted.
Joe Mauer of the Minnesota Twins had the highest batting average in the 2009 Major League Baseball season. His average was .461. So assume the probability of getting a hit is .461 for each time he batted. In a particular game, assume he batted fou..
From a previous study, the standard deviation of the ages is known to be 3 years.
I survey 50 potential consumers regarding their interest in the product, 34 express an interest in purchasing it. The maximum price each would be willing to pay is shown below.
Calculate sample proportion and then also calculate a 99% confidence interval for true population proportion, p.
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