A plan for an executive traveler's club has been developed by an airline on the premise that at least 5% of its current customer
s would qualify for membership. A random sample of 500 customers yielded 40 who would qualify. Using this proportion data, test at alpha = .01 the null hypothesis that the company's premise is correct, against the alternative that it is higher than the premise. 1. What is the standard error for this hypothesis test?Use four decimal places in your answer and use the proper rules of rounding. 2. What is the critical value for this test?Use four decimal places in your answer and use the proper rules of rounding.
1 answer:
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Answer:
Given the equation:
A quadratic equation is in the form: where a, b ,c are the coefficient and a≠0 then the solution is given by :
......[1]
On comparing with given equation we get;
a =3 , b = 10
then, substitute these in equation [1] to solve for c;
Simplify:
Also, it is given that the difference of two roots of the given equation is
i.e,
Here,
, ......[2]
.....[3]
then;
simplify:
or
Squaring both sides we get;
Subtract 100 from both sides, we get
Simplify:
-12c = -96
Divide both sides by -12 we get;
c = 8
Substitute the value of c in equation [2] and [3]; to solve
or
or
Simplify:
Now, to solve for ;
or
or
Simplify:
therefore, the solution for the given equation is: and -2.