A researcher wants to determine if there is a significant difference between the average fuel mileages for city and highway driving for the same model of cars. Use the EPA data below from a variety of 4-door sedans built in 2015 to determine if there is a difference between the city and highway fuel mileage for the same car models using α = 0.05. Round calculations to the nearest tenths.

what test should you perform for this and why?

calculate the test

QUESTION 3: A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of nine patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.7, 2.8, 3.0, 2.3, 2.3, 2.2, 2.8, 2.1 and 2.4.

a) Find the mean of the sample.

b) Find the standard deviation of the sample.

c) Find the median of the sample.

d) Based on the mean and the standard deviation in the sample, estimate the mean amount of time that the tranquilizer is effective in the whole population by constructing and interpreting a 90% confidence interval. (Assume the required conditions are held.) Here you don’t need to show how the interval is built. Just the interval and its interpretation.

1. Glycogen:

a.)  Is mainly broken down to glucose-1-P by glycogen synthase

b.)  Has branch chains that are attached at the branch points by alpha 1,4

glycosidic linkages

c.)  Built by glycogen phosphorylase when there is high ATP and high glucose-6-

P

d.)  Is an important storage form of glucose in our livers

e.)  Both a and c 

2. What effect will high fructose-2,6-bisphosphate and low ATP have on gluconeogenesis?

a.)  It will shut gluconeogenesis down at the step of triose phosphate isomerase

b.)  It will speed gluconeogenesis up at fructose-1,6-bisphosphate phosphatase

c.)  It will speed up gluconeogenesis by hyperactivating triose phosphate

isomerase

d.)  It will speed up gluconeogenesis by hyperactivating phosphofructokinase

e.)  Both b and d

Many families in California are using backyard structures for home offices, art studios, and hobby areas as well as for additional storage. Suppose that the mean price for a customized wooden, shingled backyard structure is . Assume that the standard deviation is .

a. What is the -score for a backyard structure costing (to 2 decimals)? If your answer is negative, enter minus (-) sign. b.

What is the -score for a backyard structure costing (to 2 decimals)?

c. Interpret the -scores in parts (a) and (b).

Comment on whether either should be considered an outlier. is standard deviations the mean. is standard deviations the mean.

d. If the cost for a backyard shed-office combination built in Albany, California, is , should this structure be considered an outlier? Explain. is (to 2 decimals) standard deviations the mean. This cost an outlier.

The intersection (∩) of two sets (s1, s2) is the set of all elements that are in s1 and are also in s2. Write a function (intersect) that takes two lists as input (you can assume they have no duplicate elements), and returns the intersection of those two sets (as a list) without using the in operator or any built-in functions, except for range() and len(). Write some code to test your function, as well.

Note: Do not use the in operator for this assignment. The keyword in used in for loops (e.g. for x in list) is allowed, as that is not the same as using the in operator. The following code, which uses the in operator, would not be permitted, since it makes this question too easy:

if elem in set2:
# do something

Sample Output for Part 1:

>>> intersect([1,3,5,7,9,11,13,15,17,19,21,23,25], [1,4,9,16,25]) [1, 9, 25]

As we said in class all models are built on assumptions:

1     Dividend payout ratio is 50% therefore, the retention rate is the remainder

2      All assets and noninterest bearing liabilities vary is the same proportion as sales

3       Use the following equation to find the additional funding needed (AFN):

.

REQUIRED:

1. Find the AFN using the model equation above

2      Fill in the blanks in the table above.

3.     Write a paragraph on findings or conclusion after your perform the algorithmic modelling

a- • Must a contractor be delayed beyond the contractual project duration in order to successfully file a claim for 15 delay damages? • Explain your answer

b- • A contract contains the following clause: • “The owner specifically reserves the right to modify the progress schedule as required by the conditions of the work.” Can a contractor that has been delayed by the owner’s revisions to the order of the work in the schedule successfully file a claim for a time extension? • Explain your answer

c- • What is the role of “as-built” schedules in litigation involving delays?

d- • To minimize the chance of losses, suggest a methodology to follow when a delay, that has the potential 18 of resulting in litigation, occurs on a construction project.

e- • Explain two of the added costs that might be incurred by the contractor as a result of a change issued by the owner.

Use Excel to answer the following question:
Sundance Detective Agency purchased new surveillance equipment with the following estimates. Note: The year index is k = 1, 2, 3, ... to calculate the maintenance costs and extra revenues for the corresponding years.

(a) Prepare a cash-flow (CF) table, do present worth (PW) analysis using an appropriate Excel built-in function to calculate the discounted payback period x with a return of 10% per year.
(b) For a preliminary conclusion, should the equipment be purchased if the actual useful life is 7 years? Comment.

2. The average distance between two neighboring stars in our galaxy is about 5 light-years. (a)

How many years would it take the Voyager 1 Space Probe to travel 5 light-years?

(b) If an alien civilization built a spaceship that can travel 5 light-years in 1000 years. How many kilometers does this spaceship travel in 1 second? (hint: Google “how far is 1 light-year”)
3. (a) How many minutes would it take the alien spaceship in question 2 to go from Earth to the moon?

(b) How many minutes would it take Voyager 1 to travel the same distance? (hint: Google “average distance between Earth and Moon”)

Create properly formatted script file (Initials_Final_pb_02.m) that will prompt the user to input a 1-D array of numbers (positive, negative, zero) and then use loop and conditional statement to find the number of all non-zero elements in this array and their products

Do NOT use the built-in commands such as sum, prod, length, size, … etc.

-        Use proper names for input and output variables.

Use the following 3 vectors to test your function and include the results as a commented text at the end of your script file. [3 -1 0 -4 2], [10 -15 20 -15 0], [1 0 -2 5 -2 3]

Format the output using fprintf similar to the following:

There are 4 non-zero numbers and their product is 24