kappy10

07.04.2020 • 

Mathematics

Is there a linear relationship between calories and sodium content in beef hot dogs? A study of 20 beef hot dogs gives the regression output below.

Dependent variable is: Sodium Predictor Constant 228.33 77.97 -2.93 0.009 Calories 4.0133 0.4922 8.15 0.000 S 48.5799 R-Sq= 78.7% R-Sq ( adj ) 77.5% Coef SE Coef

1. Which of the following gives a 99% confidence interval for the slope of the regression line?

2. What is the value of the test statistic associated with the independent variable calories?

3. State the conclusion of a test of the hypothesis that the slope of the line defined by calories and sodium is zero.

a) 4.0133 +- 2.861 (48.5799/SQRROOT(20)), 8.15, do not reject
b) 4.0133 +- (2.878)(0.4922), 8.15, reject
c) 4.0133 +- (2.861)(0.4922), -2.93, reject
d) 4.0133 +- 2.878 (48.5799/SQRROOT(20)), value is not shown, do not reject
e) 4.0133 +- 2.861 (0.4922/SQRROOT(20)), -2.93, do not reject

Ответ:

eriks1818

17.08.2020

Mathematics

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h(t) = 210 – 15t models the altitude of a hot air balloon over time t, in minutes

means that at time t min, the height h of the balloon is 210-15t     (units)

for example,

at time t=1 min, the height of the balloon is 210-15*1=195 (units)

at time t=2 min, the height of the balloon is 210-15*2=210-30=180   (units)

thus, h(10) is the height of the balloon at time t=10 min,

h(10)=210-15*10=210-150=60

step-by-step explanation:

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