Students in a learning theory study were given an exam and then retested monthly for 6 months with an equivalent exam. The data obtained in the study are shown in the cable, where t is the time in months after the initial exam and s is the average score for the students. 1 2 3 4 5 6 t 84.7 78.2 72.6 68.8 66.7 65.6 (a) Use a graphing utility to find a logarithmic model for the average score s in terms of the time t. (Round your coefficients to two decimal places.) s(t) = (b) Use a graphing utility to plot the data and graph the model. How well does the model fit the data? O The model fits the data well. O The model does not fit the data well. (c) Find the rates of change of s with respect to t when t = 3 and t = 5. (Round your answer to one decimal place.) t = 3 t = 5
Students in a learning theory study were given an exam and then retested monthly for 6 months with an equivalent exam. The data obtained in the study are shown in the cable, where t is the time in months after the initial exam and s is the average score for the students. 1 2 3 4 5 6 t 84.7 78.2 72.6 68.8 66.7 65.6 (a) Use a graphing utility to find a logarithmic model for the average score s in terms of the time t. (Round your coefficients to two decimal places.) s(t) = (b) Use a graphing utility to plot the data and graph the model. How well does the model fit the data? O The model fits the data well. O The model does not fit the data well. (c) Find the rates of change of s with respect to t when t = 3 and t = 5. (Round your answer to one decimal place.) t = 3 t = 5
Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
Problem 2TI: Sales of a video game released in the year 2000 took off at first, but then steadily slowed as time...
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