Determine if the most appropriate statistical analysis technique is conducting a hypothesis test or constructing a confidence interval. Then, select the symbol for the corresponding parameter of interest. A large random sample of Delta flights and an Independent large random sample of united flights are to be collected. For each flight, whether or not flight time will be recorded. This data will then be used to estimate the difference in rates of flights that are on-time for Delta versus United.

a. Hypothesis Test
b. Confidence Interval
c. p
d. p1-p2
e. μ
d. μd
f. μ1- μ2

i can't see the picture : /

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

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