6
From 1988 to 2008, the number B of federally insured banks could
be approximated by B(t)=−324t+13741 where t is the year and t=0
corresponds to 1988.
Find the slope of the graph of B.
Interpret this slope as a rate of change. Choose the correct answer
below.
Find the y-intercept of the graph of B.
The y-intercept is
Interpret the y-intercept. Choose the correct answer below.
11
A regression was run to determine if there is a relationship
between hours of TV watched per day (x) and number of situps a
person can do (y).
The results of the regression were:
y=ax+b a=-0.806 b=22.347
Use this to predict the number of situps a person who watches 12.5 hours of TV can do (round to one decimal place)
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6 From 1988 to 2008, the number B of federally insured banks could be approximated by...
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).The results of the regression were:y=ax+b a=-0.907 b=32.986 r2=0.471969 r=-0.687Use this to predict the number of situps a person who watches 5.5 hours of TV can do (to one decimal place)
3. The number of children (in thousands) receiving Social Security for each year from 1988 to 1995 can be modeled using the following polynomial: N()3.7475+509436-97.3314+32076918 where t is time in years since 1988. a) Graph this function in an appropriate window, label completely b) What is the y-intercept, and what does this tell you in practical terms? Ansers should include complete sentences in contert.) c) How many children on social security does this model predict in the year 1990? (3,186,000...
study was done to look at the relationship between number of movies people watch at the theater each year and the number of books that they read each year. The results of the survey are shown below. 26 Movics 4 9 4 0 1 3 Books 12 1 2 13 a. Find the correlation coefficient: r = Round to 2 decimal places. b. The null and alternative hypotheses for correlation are: Ho ? 0 H1? 0 Round to 4 decimal...
a. Fit a simple linear regression model relating number (y) of software millionaire birthdays in a decade to total number (x) of births in this country. Give the least squares prediction equation. b. Practically interpret the estimated y-intercept and slope of the model, part a. c. Predict the number of software millionaire birthdays that will occur in a decade where the total number of births in this country is 26 million. d. Fit a simple linear regression model relating number...
shown below Q1 Q2 23 24 Q6 Q7 b. The nall and altermative hypotheses for The p-valuc is Round to 4 decimal places c. Use a level of significance of α-0.05 to state the coeclusion ofth' hypothesis test in the context ofthe study. There is statistically significant evidence to conclude that a person who watches fewer movies will read fewer books than a person who watches fewer movies There is statistically significant evidence so conctude that there is a correlation...
A study was done to look at the relationship between the number of movies people watch at the theater each year and the number of books that they read each year. The results of the survey are shown below. Movies 2 2 2 2 7 10 2 2 9 7 6 1 Books 10 6 6 6 3 0 8 5 1 6 2 6 x value y value Find the correlation coefficient: r=r= Round to 2 decimal places. The null...
A study was done to look at the relationship between number of movies people watch at the theater each year and the number of books that they read each year. The results of the survey are shown below. Movies 6 4 7 10 2 3 6 7 9 10 3 2 Books 6 8 6 4 14 9 11 5 9 8 12 9 Find the correlation coefficient: r=r= Round to 2 decimal places. The null and alternative hypotheses for correlation...
3. The rate of change in the daily U.S. petroleum p(t) million barrels per year production between 2000 and 2008 is given by p(t) million barrels per year where is the number of years since 2000 0.19 Do not round any intermediate values when you calculate the areas. That is, report the exact values to six decimal places. t years since 2000 -0.031 (6.583,0) 0.311 a. Calculate the area of the region lying above the t-axis between the graph of...
A. What is the b (slope) for education? (-0.220 / 0.066 / -0.255 / 0.043) B. Is there a positive or negative relationship between education and television viewing hours? (Negative / Positive) C. What is the b (slope) for number of children? (-0.220 / 0.066 / -0.255 / 0.043) D. Is there a positive or negative relationship between number of children and television viewing hours? (Negative / Positive) E. What is the equation for multiple regression? -a=mean of y-slope(mean of x) -b=...
5. Write sentences that interpret the slope and y-intercept of the LSRL. 6. Superimpose the regression equation on the scatterplot. 7. Predict the rate of heart attacks for a country where the average wine consumption is 3 liters/person/year. 8. Would it be appropriate to try to predict the death rate from heart attacks for Estonia where the per capita wine consumption is 15 liters/year? Why or why not? 9. What is the explained variation for this data? Interpret your result....