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An experiment was performed on a certain metal to determine if the strength is a function of heating time. Results based on 10 metal sheets are given below. Use the simple linear regression model.
SSxx = 14 SSyy = 18 SSxy = 14 ∑X = 30 and ∑Y = 40
Determine SSE, SS (Total) and the explained sum of squared variation SSR and find the estimated y intercept slope and write the regression equation.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Let Y be the number of envelopes for which the machine fails to remove a check. Using the Central Limit Theorem to approximate P{Y≤10}.
Suppose the population is normally distributed they make a decision to do a hypothesis test.
Probability histogran curve of percentage of (P)z
A frequency polygon: does not depend on one variable. True-False
In a survey conducted to see how long Americans keep their cars, 2000 automobile owners were asked how long they plan to keep their present cars. The results of the survey follow. Find out the probability distribution associated with these data.
A psychologist determined that the number of sessions required to obtain the trust of a new patient is 1, 2, and 3. Let x be the random variable indicating the number of sessions required to gain the patient's trust. The following probability fu..
Suppose the probability of the worst-case scenario increases Compute the expected value of perfect information
Claculate the exponential also adjusted exponential smoothing forecast and linear trend forecasting. The hotel has experienced the following occupancy rates for the past 9 years.
Construct the following confidence intervals for your data set:
Report the t-value, whether you accept or reject Ho, and whether the difference was significant in a brief sentence.
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
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