Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The ratings were obtained at one university in a state. Construct a confidence interval using a 95% confidence level. What does the confidence interval tell about the population of all college students in the state? 3.8, 2.9, 3.9, 4.7, 2.9, 4.3, 3.6, 4.8, 4.6, 4.2, 4.1, 3.8, 3.2, 4.1, 3.8 What is the confidence interval for the population mean u?
In: Statistics and Probability
Covid-19 global economic pandemic has negatively affected economies as a whole at the global, national and regional levels. The novel effects of the fluidity of Covid-19 appears to continue to have negative impacts on the macro business model as the global recession seems to be inevitable. You are working as a macroeconomist in economic affairs in your local country, and you are tasked with analyzing the impact of Covid-19 on the economy and you are required to prepare notes on what specific government policies can be implemented as a stimulus package to jump-start the economy savings and investment market. The team meeting will be held in 3 days from the date of the assignment and because of limitation of time the Chief economist has given you the following guidelines: (a) You are required to identify four (4) key macroeconomic issues from the impact of Covid-19, (b) For each issue in (a) explain in detail what specific government policy would you implement (c) What would be the rationale for your choice of policy and (d) Your answer should be accompanied by relevant diagrams where possible.
In: Economics
ANOVA
Part 1—A study compared five groups with six observations per group. An F statistic of 5.13 was reported.
A.) Give the degrees of freedom for this statistic and be specific about which part you are referencing, numerator or denominator.
B.) Find the P-value associated with this F-statistic. Show your calculator command in the space provided.
Part 2—A study to compare four groups took random samples from each population of interest of sizes 38, 42, 21, and 45. The corresponding sample standard deviations are 2.5, 1.4, 2.7, and 3.1 respectively.
A.) Is it reasonable to use the assumption of equal standard deviations when we analyze these data? Explain your answer.
B.) Is it reasonable to believe that we have met the Normal condition when we analyze these data? Explain your answer.
In: Statistics and Probability
1. You are attempting to identify genes involved in osmotic stress response in Bacillus atrophaeus, a Gram positive endospore former. For your work, you set up a chemostat (continuous) culture. You remove two samples of culture, expose one to a high salt concentration, wait five minutes, and then extract all their mRNA. You then label the control with a green fluorescent die, the experimental with a red fluorescent dye, and then hybridize the mixture to a microarray. Following analysis, the microarray reader generates a list of ratios of fluorescence of the spots on the array calculated as red vs. green. The expression ratios of the first five genes (of many thousands!) are as follows:
Gene A: 1.002
Gene B: 34.271
Gene C: 0.260
Gene D: 27.930
Gene E: 0.997
a. At what stage of growth are your cells in the chemostat?
b. Imagine you repeated the above experiment every day for a week. How might your results compare if done using cells from a continuous culture (as above) vs. from a batch culture? Explain.
c. Based on the microarray data, which gene(s) might be involved in stress response to salt?
d. Which gene(s) might be involved in constitutive (background, needed all the time) functions?
e. Which gene(s) might be involved in a process not essential to survival during times of stress?
f. Confident you have identified a number of genes involved in protecting B. atrophaeus from salt stress response, you decide to begin by studying one further. How might you genetically engineer B. atrophaeus to demonstrate the involvement of this gene in stress response to salt?
In: Biology
Use MATLAB to determine the intersection point for the sets of equations shown below. Use the backslash when possible.Graph the equations with different colors, and plot the intersection point with a red star marker. If the equations do not intersect, graph them anyway.
Include a legend:
a) -4x1 + 2x2 = 10 b)-4x1+2x2^3 = 10
x1 + x2 = -8 x1+ x2 = -8
In: Mechanical Engineering
9.) Write a MATLAB script that will read the Pressure and Temperature columns from the provided Excel file. Use a loop to calculate the linear best fit line for the data. You may only use the built-in functions sum, size, and length. Plot both the individual data points (red) and the fit line (blue) on the same graph. Include a title and axes labels.
In: Computer Science
Q2. a) Explain the penetration test carried out on bitumen, state its significance and draw the test apparatus.
b). Mention the main factors considered in the choice of construction materials at the design office – is any of them more important than the other?
c). What factors affect the weldability of steel?
d). Consider the iron value chain from material extraction to disposal, at what point according to your assessment is the most energy used? As a design engineer, at what stage do you think is your intervention most important and what role can you play in making iron more sustainable?
In: Civil Engineering
|
The Red Mill Inn is in need of a new roof. A local contractor, Jack Hammer, has been asked to |
||
|
submit a bid to do the work. Jack measured the roof and determined he would need 50 cases |
||
|
of roofing material. The cost per case is $45. Jack also determined it would take a four-man |
||
|
crew four 8-hour work days to complete the job. Each worker is paid $15 per hour. Before the |
||
|
year began, Jack estimated his total overhead costs to be $152,000. He applies overhead to jobs |
||
|
based on the amount of direct labour hours the job takes. Jack estimated the total direct labour |
||
|
hours for the year to be 10,000 hours. |
||
|
a) What is Jack's predetermined overhead rate for the year? |
||
|
b) How much overhead was charged to the Red Mill Inn job? |
||
|
c) What was the total cost of the Red Mill Inn job? |
||
|
DM |
||
|
DL |
||
|
OH |
||
|
Total Cost |
||
|
d) If Jack charges his customers an amount equal to 25% above his cost, what would his |
||
|
bid to replace the roof on the Red Mill Inn? |
||
In: Accounting
Exercise 18: Running Ex. 16 You will write exercise 16 into a program and make it run. Note that there are two parts, 16A and 16B. Type 16A into a program called Exercise16A and type 16B into a program called Exercise16B. Be sure label each section using comments. You may notice that additional code needs to be written for the program to run. For example, Section I assumed that an array was already declared and initialized. Here, you will have to declare and initialize an array with random values to test it.
Section A. Declare and initialize an array firstNames containing the following names: Jane, Jim, Beth, Mary, Sara, and Bob. Remember to choose the correct data type for the array elements.
Section B. Using a FOR loop, output the elements of the array firstNames so that they are displayed on the same line and separated by a space. Use .length to get the length of the array.
In: Computer Science
Distribution Strategy on TOPIC NIKE
What is your current distribution strategy? What missed opportunities or disconnects are you seeing in this distribution approach? Make recommendations about your future distribution strategy based on the following:
In: Operations Management