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Employees of a local company are classified according to gender and job type. The following table summarizes the number of people in each job category.
Male (M) Female (F)
Job
Administrative (AD) 110 20
Salaried staff (SS) 30 70
Hourly staff (HS) 60 40
If an employee is selected at random, what is the probability that the employee is male or works as a member of the administration.
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.
What is your conclusion regarding null hypothesis?
Gestational Age (Gestage, weeks) for sample of 100 low birth weight infants, and output from fitting a simple linear regression model to data, regressing Headcirc (Y) on Gestage (X).
An insurance company sells $300 deductible annual automobile insurance policies to a certain category (age, driving records) for $1000.00 The insurance company has set four different accident types
A simple random sample is to be drawn from a population of 1200. To have 90% confidence that the sampling error in estimating p is no more than 0.03
The American Automobile Association checks the prices of gasoline before many holiday weekends.
Determine the average and the variation for Brand 1 price, sales market share, and total revenue, using the weekly market survey data (descriptive statistics).
The statistical analysis predicted that there would be 104 foxes. Calculate the residual for that data point.
Analysis of Variance (ANOVA) is used to test the equality of the means of three or more groups based on sample data. ANOVA is really a test of means even though it sounds like a test of variance.
If the sales, employment, production, and other business series increase or decrease over a period of time and approximate a straight line, the equation for this growth is given by
You know that all sociology majors study 2.5 hours per day with a standard deviation of 1.
Computing the probability values for the given discrete distribution - What is the probability that you did not shake hands with a person with the flu
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