QUESTION SEVEN a) A cigarette manufacturing firm distributes two brands of cigarettes. Two random samples are selected and it is found that 56 of 200 smokers prefer brand Α and that 29 of 150 smokers prefer brandΒ . Can we conclude at the 0.05 level of significance that the percentage of smokers who prefer brand Α exceeds that of brand Β by more than 10%?

b) An auditor claims that 10% of invoices for a certain company are incorrect. To test this claim a random sample of 200 invoices are checked and 24 are found to be incorrect. Test at the 1% significant level to see if the auditor’s claim is supported by the sample evidence.

c) The personnel department of a company developed an aptitude test for screening potential employees. The person who devised the test asserted that the mean mark attained would be 100. The following results were obtained with a random sample of applicants:

x = 96,   s= 5.2,   n=13

Test this hypothesis against the alternative that the mean mark is less than 100, at the 1% significance level.

Your ANOVA variable is Depth

Is the mean of your variable (standard length, depth, or horizontal gape) the same for all three of the Bluegill collections?

(i) State the hypotheses the ANOVA is testing. You may refer to Hogan as population #1, Malone as population #2, and Preserved as population #3. (2 pt)

H₀: ________________                                         Ha: ________________

Complete the ANOVA table. Please enter your answer to 3 decimal places (3 pt)

State conclusion: Are the means significantly different for this variable among the three fish collections? (Use α = 0.05.) Please include a sentence on how the means of the three groups compare, if you conclude the differences are significant. (3 pt)

___________________________

46) Identify the developmental stages of adulthood, two (2) major activities related to each stage and 1 example of variation in health needs and ADLs. Developmental stage of adulthood:

46.1) Early adult period (20 to 40 years)

46.2) Middle adulthood (40 to 65 years)

46.3) Older adult (older than 65 years of age)

Please very super breifly, aproximately 30-50 words, explain below elements in regards to the above senarios seperately for each one of them on each one of the senarios:

Major activities?

Variation in health needs and ADLs?

Field crickets have a mean chip rate of 60 chirps per second with a standard deviation
of 40 chirps per second. It has been hypothesized that the chirp rate of a field cricket is
related to its nutritional status. In order to test this, a group collected 22 field crickets and
fed them a high protein diet for 8 days. After the eight days it was found that the mean
chirp rate of the 22 test crickets was 85 chirps per second.

a) Find a 95% confident estimation for the mean chirp rate of field crickets on a high
protein diet.(Assuming a normal distribution)

b) Does this provide sufficient evidence to say that a high protein diet increases chirp
rate? Use α = 0.05.

1. create a program that will verify a user's login credentials. The program should prompt the user to enter his/her username and password at the keyboard. Then it should read the data from a data file named "login.txt". The file "login.txt" will contain a list of 3 valid usernames and passwords to verify the login information supplied by a user.  If the username and password entered by the user matches one of the sets read from the file, the program should print a message "You have successfully logged in...welcome!!" If not, then the program should print a message "Sorry, incorrect login information. Access denied".

The file "login.txt" should contain the following lines of text:

jramerez WhatsUp22!!

kanderson HeyDude23!

mjones ChillOut24!!

Your program should produce output similar to the following (here are two sample runs, one where login failed and one where it succeeded):

__________________________________________________________________________________________________________

Please enter your username and password seperated by a space:

asaprocky Hello!234

Sorry, incorrect login information. Access denied.

_____________________________________________________________________________________________________________________________

Please enter your username and password:

kanderson HeyDude23!

"You have successfully logged in... Welcome!!

_____________________________________________________________________________________________________________________________

**Hints:  

• Create the  file "login.txt" with a text editor such that it contains the 3 lines of data given above. Save the file to your project folder in your eclipse workspace.
• Use 2 Scanner objects, one to read from the keyboard, and one to read from the file "login.txt"

1. Suppose you buy 200 shares of stock ABC at $50 per share and sell it in a year. The initial margin is 40%. The call money rate is 7%. One year later, stock price decreases 20% to $40. What's the rate of return of buying on margin?

   	A.	-57.5%
   	B.	-60.5%
   	C.	-62.5%
   	D.	-70%

Develop a plan of care recognizing TWO actual and ONE potential health problem for the following patient. (NO MORE THAN 10 NURSING INTERVENTIONS) (15 mrks)

Sandra Payne is a 66-year-old female who was admitted to surgical unit with a history of hyperthyroidism for thyroidectomy. Despite Mrs. Payne increase in appetite, she has lost 15 pounds within last month. She complains of intolerance to heat and sweats profusely. She also complains nervousness and irritability. Her vital signs are T37.6 P 108 R 24. Recently, she has refused visitor claiming that she is ashamed of how she looked and ask you the nurse why she have to have surgery?

There are two types of potential borrowers in equal numbers among the population. All have projects that require an investment of $100, which must be borrowed. Type A projects yield a gross return of $130 in one year with probability .8; they fail and yield 0 with probability .2. Type B projects yield a gross rate of return of $250 with probability .4, but fail, yielding zero, with probability .6. Potential lenders require a gross return of $102 on $100 loaned. With symmetric information, who will get financing and why? Now suppose the project expected returns are private information. Lenders cannot distinguish one type from another. Will any lending occur? Why or why not? Explain in detail.