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In a certain assembly plant, three machines, B1, B2, and B3, make 30%, 45%, and 25%, respectively, of the products. It is known from past, experience that 2%, 3%, and 2% of the products made by each machine, respectively, arc defective. Now suppose that a finished product is randomly selected. What is the probability that it is defective?
Is there any statistically significant difference in how the drugs perform? If so, explain the effect. Use the post hoc tests as needed.
Evaluate the multiple regression model between quantity sold (Y) and following explanatory variables: average price of deep-dish pizzas, monthly advertising expenditures, and disposable income per household in areas surrounding outlets.
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
Here are fifty observations on the weight of tea bags. Create mean, mode and median.
If the sum of the squared deviations about the regression line is SSE = 40.0, what is the coefficient of determination?
A university found that 20 percent of its students withdraw without completing the introductory statistics course. 20 students registered for a section of the course this term.
In regression equation, the value of y-intercept indicates the value of Y when the value of X is zero.
If she has chosen the first weeks rides, how many ways can she choose four more different rides for the second week? Assume that order does not matter.
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 44. Determine the value of x from the following information.
Find out the value of test statistic utilizing one sample proportion testing. Use the subsequent information for the below questions.
Test whether the mean weight is less than 10 pounds. Use P-value approach.
A multiple regression equation for list price of homes in certain community in USA is=170,000 -850 X 1 + 28,000 X 2 , where X 1 signifies age in years and X 2 signifies number of rooms.
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