A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was gre
1 answer:
Answer:
(D) Conclusion: Do not support the claim that the mean is greater than 9.4 minutes
Step-by-step explanation:
Let X be the mean duration of long distance telephone class originating in one town.
(one tailed test)
The conclusion of the hypothesis test assuming that the results of the sampling don’t lead to rejection of the null hypothesis.
This means that there is no statistical evidence to support the alternate claim.
Hence option D is right.
(D) Conclusion: Do not support the claim that the mean is greater than 9.4 minutes
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Answer:
6/5
Step-by-step explanation:
Put 1 where x is and solve.
3·1 -5y = -3
-5y = -6 . . . . . subtract 3
y = 6/5 . . . . . . divide by -5
The value of y is 6/5 when x = 1.
Answer:
- Equal midpoints of AC and BC.
- The product of the slopes of the diagonals AC and DB is -1.
Step-by-step explanation:
1. Plot the given points, as you can see in the graph attached.
2. Calculate the midpoint of AC and DB:
Therefore, the midpoint of AC and DB are equal.
3. Calculte the slope of the diagonals AC and DB:
4. Multiply the slopes of the diagonals:
(AC and DB are perpendicular)
Answer:
Interest rate is 1.4% and APR is 16.8%.
Step-by-step explanation:
Given,
The original cost of the car = $ 6,498,
Down payment = $ 798,
So, the present value of loan, P.V. = original cost - down payment
= $ 6,498 - $ 798 = $ 5700,
Now, the monthly payment, P = $ 162.51,
Number of months, n = 48,
Let r be the monthly interest rate,
Since, monthly payment formula of a loan,
By graphing calculator,
Hence, interest rate = 1.4%,
And, APR = 12 × 1.4% = 16.8%.