Step-by-step explanation:
all you have to doe is type Ex:4 into the calculator and you should get your answer.
Answer:
2, 4 are the correct ones
X/3 > 7 <== ur equation
multiply both sides by 3
x > 7 * 3
x > 21 <== ur solution
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 .
Answer:
343
Step-by-step explanation:
Because the 5 rounds 9 to a 10, making the 7 an 8, hence:
342.8
round the 2 to a 3 because the 8 round it up, making it 343
