A school psychologist wishes to determine whether a new antismoking film actually reduces the daily consumption of cigarettes by teenage smokers. The mean daily cigarette consumption is calculated for each eight teenage smokers during the month before and the month after the film presentation, with the following results:
MEAN DAILY CIGARETTE CONSUMPTION
|
SMOKER NUMBER |
BEFORE FILM (X1) |
AFTER FILM (X2) |
|
1 |
28 |
26 |
|
2 |
29 |
27 |
|
3 |
31 |
31 |
|
4 |
44 |
44 |
|
5 |
35 |
35 |
|
6 |
20 |
16 |
|
7 |
50 |
47 |
|
8 |
25 |
23 |
(Note: when deciding on the form of the alternative hypothesis, H1, remember that a positive difference score (D=X1-X2) reflects a decline in cigarette consumption.)
Using t, test the null hypothesis at the .05 level of significance.
A)What is the research problem in this scenario?
B)Which of the following is the appropriate pair of statistical hypotheses for this study?
C)Compute the degrees of freedom for this scenario.
D)What is the decision rule in this scenario?
E)Calculate the value of the t test.
F)What is the decision about the null hypothesis in this scenario?
H)What is the interpretation in this scenario?
I)If appropriate (because the null hypothesis was rejected), construct a 95 percent confidence interval for the true population mean for all difference scores and use Cohen’s d to obtain a standardized of the effect size. Lower bound, upper bound, or 0 if null hypothesis is retained
J)Enter the estimate of the standardized effect size (Cohen’s d).
K)What might be done to improve the design of this experiment?
In: Math
A string of 0s and 1s is to be processed and converted to an
even-parity string by adding a parity bit to the
end of the string.(For an explanation of the use of parity bits,
see Example 30 in Chapter 9.) The parity
bit is initially 0. When a 0 character is processed, the parity bit
remains unchanged. When a 1 character
is processed, the parity bit is switched from 0 to 1 or from 1 to
0. Prove that the number of 1s in the final
string, that is, including the parity bit, is always even. (Hint:
Consider various cases.)
In: Computer Science
In: Economics
Does a regulatory institution need to be in place to control sports leagues (think about issues such as "deflate gate," concussions, for example)?
Is it fair to charge different sports consumers different prices to see the same game/match? Think about segmented markets, two-part pricing, or quantity discounts, for example. Who benefits? Who loses?
In: Economics
1. Also, go to the BLS Occupational Outlook Handbook (Links to an external site.) and look up two careers that you may be interested in pursuing.
2. Does the information given about these careers match your expectations?
3. Is there expected growth of jobs in these careers? How might it affect your likelihood of finding a job after graduation?
In: Economics
In: Operations Management
A manufacturer produces both a deluxe and a standard model of an automatic sander designed for home use. Selling prices obtained from a sample of retail outlets follow.
| Model Price ($) | Model Price ($) | |||||
| Retail Outlet | Deluxe | Standard | Retail Outlet | Deluxe | Standard | |
| 1 | 40 | 27 | 5 | 40 | 30 | |
| 2 | 39 | 28 | 6 | 39 | 32 | |
| 3 | 43 | 35 | 7 | 36 | 29 | |
| 4 | 38 | 31 | ||||
In: Statistics and Probability
Sushon phones were introduced into the Ghanaian market in December, 2017. Despite the many claims that were made by Trust Electronics, the distributors of the phones, it has become clear that there are quality issues with the equipment.
(b) Describe seven (7) ways by which the manufacturers of the phones can improve
their reliability.
(c) Discuss any four (4) consequences that Trust Electronics may face if they fail to improve the quality of their phones.
In: Operations Management
a). Write a program that asks the user to enter an integer N and prints two integers, root and power, such that 1 < power < 6 and N = root ** power. If no such pair of integers exists, it should print a message to that effect. There are two loops, one for power and one for root. Order the loops so that if N = 64, then your program find that N = 8 ** 2 rather than N = 4 ** 3. That is, order the loops so that the lowest power is found.
b). order the loops so that the lowest root is found. For the example given in a) , where N = 64, your program will find N = 4 ** 3, rather than 8 ** 2.
c) read an integer N from the user, and read a phrase from the user. Print the phrase N times, each time on a different line.
d) Ask the user to input 10 integers, and then the program prints the largest odd number that was entered. For example of the integers were: 10, 9, 7, 12, 2, 5, 15, 100, 90, 60, then the program would print 15 as the largest odd number. If there is no odd number, then the program should print a message to that effect.
it should be Python, and the question was asked to be solved by "Finger exercise".
In: Computer Science
8. On January 1, 2014, Fishbone Corporation (an equipment manufacturer) sold equipment to Lost Company that cost $150,000. Fishbone received as consideration a 5% interest-bearing note requiring payments of $80,000 annually for 3 years. The first note payment is to be made on December 31, 2014. The prevailing rate of interest for a note of this type on January 1, 2014, was 5%.
In: Accounting