a) Null hypothesis: the mean time of telephone surveys is less than or equal to 15 minutes. Alternative hypothesis: the mean exceeds 15 minutes. b) The computed test statistic is 2.15. c) The p-value found is 0.0158. d) NO, there is significant evidence to support that the mean survey time is fewer than 15 minutes, thus the premium rate is not warranted. Explanation: Data from Microsoft Excel includes: 17, 11, 12, 23, 20, 23, 15, 16, 23, 22, 18, 23, 25, 14, 12, 12, 20, 18, 12, 19, 11, 20, 21, 11, 18, 14, 13, 13, 19, 16, 10, 22, 18, 23. a) The null and alternative hypotheses stem from the assumption that Fowle Marketing Research Inc. bases its charges on the premise that the mean time of a telephone survey is 15 minutes or less.
Answer:
1/2 hour
Step-by-step explanation:
The distance of the head start decreases at a rate of (95-65) = 30 km/h. Thus, Chase will reach Victor after...
time = distance/speed = (15 km)/(30 km/h) = 1/2 hour
Chase will take 1/2 hour to catch up with Victor.
Answer:
4.11%
Step-by-step explanation:
Profit on stock a:
(21.15 × 100) × 6/100
126.9
Loss incurred on stock b:
(14.23 × 50) × 1.5/100
10.6725
Overall profit:
126.9 - 10.6725
116.2275
Complete share value:
(21.15 × 100) + (14.23 × 50)
2826.5
Percentage gain:
116.2275/2826.5 × 100
4.112064391%
% change = (new value - old value)/old value x 100 = (1,045 - 950)/950 x 100 = 95/950 x 100 = 0.1 x 100 = 10%
Let x represent the number of pages in the U.S. Tax Code and y denote the pages in the King James Bible.
According to the provided information,
x= y+18,528 ⇒ y=x-18,528
x+y = 21,472 ⇒ x+(x-18,528) = 21,472 ⇒ x+x-18,528 = 21,472 ⇒ 2x= 18,528+21,472 ⇒ 2x = 40,000 ⇒ x=40,000/2 = 20,000 pages
Therefore, the U.S. tax code consists of 20,000 pages.
