Answer:
(a) H0:μ1=μ2; Ha:μ1≠μ2, which is a two-tailed test.
Step-by-step explanation:
We formulate the
H0: μ1=μ2; null hypothesis that the two means are equal and alternate hypothesis that the two mean are not equal.
Ha:μ1≠μ2 Two tailed test
Test statistic used is
t= x1`-x2` / s√n as the variances are equal and sample size is same
T value for 9 degrees of freedom for two tailed test at α = 0.05 is 2.26
P- value for t test for 9 degrees of freedom is 0.125 from the table.
Hence only a is correct .
In triangle the sum of the angles =180,and we have angle=124 so,180-124=56.
X=4
Answer:
x intercept is (0.9,0)
y intercept is (0,-1.2)
Step-by-step explanation:
The bicyclist travels 90 miles in 5 hours
90÷18=5