When an ion-selective electrode for X was immersed in 0.0760 M XCl, the measured potential was 0.0450 V. What is the concentration of X when the potential is 0.0600 V? Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.

[X+] = ??M

Students collected Beta-fructosidase enzyme activity data in the presence and absence of an unknown inhibitor. P-nitrophenol was used as a read out for enzyme activity. Quantity of product was determined from the absorbance of each sample after 5 minutes of reaction. Using the information, complete the table below and create a properly labeled Lineweaver burke plot with the appropriate axes and best fit lines for the data, in excel (graph is worth 6pts). Using this plot, calculate the approximate Vmax and Km values for the reactions with and without the inhibitor. A picture of your graph can be inserted into this document as a picture.

Normal Reaction

            Vmax: _________________ (1pt)

            Km:     _________________(1pt)

Inhibited Reaction

            Vmax: _________________(1pt)

            Km:     _________________(1pt)

What type of inhibitor is this? Be sure to justify your answer by discussing the Km AND Vmax values you calculated (2pts).

A study was conducted to find out the type of relationship between randomly selected15 Masters of Education Degree students scores in Research Methods and Statistics at Mount Kenya University during the 2012/2013 academic year. The results were as displayed in the table below.
Student    Research marks   Statistics marks
1   84   69
2   74   64
3   48   56
4   54   72
5   72   85
6   71   68
7   96   87
8   75   86
9   69   71
10   100   91
11   23   31
12   58   65
13   94   89
14   76   71
15   52   54

i)   State the null and alternative hypotheses.                    (2mks)
ii)   Calculate Pearson correlation coefficient between the two sets of data.         (4mks)
iii)   What is your overall conclusion regarding the nature of relationship between the two variables if r( df = 14) at ∝ =.01 significance level?           (2mks)  
iv)   Fit a line of best fit (linear regression) of Y on X                    (4mks)
v)   Estimate the Y score of a student who obtained 6 in X                 (1mk)  

Q4. The sentences below may or may not contain errors, Re-write them, correcting any errors you find to make them acceptable without changing their meanings. i. The invited guest for the programme is still not in; it’s already 2 o’clock pm. ii. All what they needed to do was to apologize to the victims. iii. Many people are happy about what president said in his speech that, “…, but what we don’t know is to bring people back”. iv. We believe it’s high time the president lift the ban on social gathering so we can have face-to-face lectures. v. Where have you been to, Ellen? vi. Ghana’s Kwame Nkrumah and Patrice Lumumba of former Zaire were great and imminent sons of Africa. vii. All things being equal, the older generation will die before the new generation. viii. Whiles we wait for the lecturer to fix the projector, let us contact the Students’ Affairs Directorate about the date for the summer school. ix. Assess to my grandfather’s house is now a bane. x. Eric remarked I liked the serene atmosphere.

Create your own data. Ensure the data will test all criteria and prove all sorts worked as required. Be sure that all tables and queries have descriptive names. “Query 1” and “Step 1” are examples of poor names.

Step 1

Build a Database named DBMS Course Project. The database should include the following tables:

• First Table – Students
  • ID
  • First Name
  • Last Name
  • Address
  • City
  • State
  • Zip Code
  • Phone Number with area code
• Second Table – GPA
  • ID Current GPA (two decimal positions)
  • Class (numeric field, 1 = Freshman, 2 = Sophomore, etc.)
    • Freshman
    • Sophomore
    • Junior
    • Senior
    • Graduate Student
• Third Table – Scholarships
  • ID
  • Major course of study
  • Academic Scholarship (Use Yes/No data type)
  • Athletic Scholarship (Use Yes/No data type)

Step 2

Extract the First and Last Name, Address, City, State, Zip Code and Phone Number of each Senior on the database. Sort by Last Name, then First Name (1 sort).

Step 3

Extract the First and Last Name, and GPA of each student who qualifies for the Dean’s List. Sort by GPA, then Last Name, then First Name (1 sort). A GPA of 3.25 is required to make the Dean’s List.

Required information
In 2018, the Westgate Construction Company entered into a contract to construct a road for Santa Clara County for $10,000,000. The road was completed in 2020. Information related to the contract is as follows:

Westgate recognizes revenue over time according to percentage of completion.

2-a. In the journal below, complete the necessary journal entries for the year 2018 (credit "Various accounts" for construction costs incurred).
2-b. In the journal below, complete the necessary journal entries for the year 2019 (credit "Various accounts" for construction costs incurred).
2-c. In the journal below, complete the necessary journal entries for the year 2020 (credit "Various accounts" for construction costs incurred).

[The following information applies to the questions displayed below.]

In 2021, the Westgate Construction Company entered into a contract to construct a road for Santa Clara County for $10,000,000. The road was completed in 2023. Information related to the contract is as follows:

Westgate recognizes revenue over time according to percentage of completion.

2-a. In the journal below, complete the necessary journal entries for the year 2021 (credit "Various accounts" for construction costs incurred).
2-b. In the journal below, complete the necessary journal entries for the year 2022 (credit "Various accounts" for construction costs incurred).
2-c. In the journal below, complete the necessary journal entries for the year 2023 (credit "Various accounts" for construction costs incurred).

What data is selected to in excel to calculate MAD for part b?

The graduate assistant for the Santa Clara Broncos football team has compiled the following statistics: Year wins avg offensive yards avg interceptions 1 10 500 2 2 8 450 4 3 5 250 10 4 10 485 1 5 7 399 4 6 11 521 2 7 4 158 15 8 11 525 0 9 8 485 4 10 4 300 9 11 5 350 9 12 7 375 9 13 2 150 15 14 5 380 5 a. Using Excel, develop a linear regression model for wins, employing average offensive yards and average interceptions. b. Calculate the MAD for your model. c. Calculate R, F, and t statistics and interpret them.

Required information

[The following information applies to the questions displayed below.]
  
In 2018, the Westgate Construction Company entered into a contract to construct a road for Santa Clara County for $10,000,000. The road was completed in 2020. Information related to the contract is as follows:

Westgate recognizes revenue over time according to percentage of completion.

rev: 09_15_2017_QC_CS-99734

4. Calculate the amount of revenue and gross profit (loss) to be recognized in each of the three years assuming the following costs incurred and costs to complete information. (Do not round intermediate calculations and round your final answers to the nearest whole dollar amount. Loss amounts should be indicated with a minus sign.)