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Compute the standard error of the estimate for the data below.
X values 56 68 78 85 98
Y values 87 110 138 161 186
How might you go about creating a stronger regression model? For example, you have a multiple regression model with an adjusted R-Square of 0.49, which would explain 49% of the variance of the dependent measure
An Auditor of a small bsuiness has sampled 50 of 700 accounts. The sample mean total receivables is $435, and the sample standard deviation is $86. Find a 95% confidence interval for the total amount of receivables.
assume you are requested to survey middle-aged men in a particular neighborhood on their weights. you gather data from
heights of 10 year old girls follow an approximately normal distribution with mean of 54.4 and a standard deviation of
Can the binomial distribution be used to model the number of rare events that occur over a given time period?
a vending macine dispenses coffee into a twelve-ounce cup. the amount of coffee dispensed into the cup is normally
Find the mean and the standard deviation of the sampling distribution of -x and find the interval containing 95.44% of all possible sample means returns.
You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 95 percent confidence level and state that the estimated proportion must be within 2 percent of the population proportion.
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
a random sample of 64 students at a university showed an average age of 25 years and a sample standard deviation of 2
206 randomly selected light bulbs were tested in a laboratory, 161 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more than 500 hours.
1. based on the background information describe briefly how samples of students are obtained from each university.
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