Draw the mechanism and label products and reactants for the synthesis of aniline to 4-Bromo-2-Chloroacetanilide:

Aniline + Acetic Anhydride --> Acetanilide + Acetic Acid

Acetanilide + Bromine --> 4-Bromoacetanilide

STEP 1: Hydrochloric Acid + Sodium Chlorate --> Chlorine + Water + Sodium Chloride

STEP 2: 4-Bromoacetanilide + Chlorine --> 4-Bromo-2-Chloroacetanilide

4-Bromo-2-Chloroacetanilide + Ethanol --> 4-Bromo-2-Chloroaniline + Ethyl Acetate

Show all lone pairs or formal charges.

The table below shows three different technologies used to produce various levels of output.

(a)        In general, which technology is the most desirable?

(b)       Which technology will be chosen if the firm wishes to produce 1 unit of output, the price of capital is $4 per unit, and the price of labor is $2 per unit?

(c)        Will this still be cheapest if the input prices change to $3 and $3, respectively?

(d)       Will this still be cheapest if the input prices change to $2 and $4, respectively?

(e)        For each of the three sets of prices in (b), (c), and (d) above, establish which technology is the cheapest for each output level.

1. A researcher is interested in the effects of practice on accuracy in a signal detection task. Participants are tested with no practice, after 1 hour of practice, and after 2 hours of practice. Each person participates in all three conditions. The following data indicate how many signals were accurately detected by each participant at each level of practice.

      Amount of practice

   Participant No Practice 1 Hour 2 Hours

   1 3 4 6

   2 4 5 5

   3 2 3 4

   4 1 3 5

   5 3 6 7

   6 3 4 6

   7 2 3 4

   Source df SS MS F

   Subject 16.27

   Between 25.81

   Error 4.87

   Total 46.95

   a. Complete the ANOVA summary table.

   b. Is F_obt significant at α = .05? α = .01?

   c. Perform post hoc comparisons if necessary.

   d. What conclusions can be drawn from the F-ratio and the post hoc comparisons?

   e. What is the effect size and what does this mean?

The following are the weekly output of a machine for the past five years.

               Compute     (a) Moment co-efficient of skewness β1 ? = μ32μ23

                                    (b) Co-efficient of kurtosis β2 = μ4μ22

There is one 1$ bill and one 5$ bill in your left pocket and three 1$ bills in your right pocket. You move one bill from the left pocket to the right pocket. After that you take one the remaining bill from the left pocket and one of the bills at random from your right pocket. Let ? denote the amount of money that you take from the left pocket and ? denote the amount of money that you take from the right pocket.

1. ? (?=1, ? =1) is

(a) 1

(b) 3 (correct)

(c) 1

(d) 5

2. ? (?=5, ? =5) is

(a) 0 (correct)

(b) 1/8

(c) 3/8

(d) 1/2

3. ?(? ≥?)is
(a) 1/8

(b) 3/8

(c) 1/2 (correct)

(d) 1

4. Covariance between ? and ? is

(a) 0

(b) −1/2

(c) −1 (correct)

(d) 1

5. Let ? denote the total amount of money that you get from your pockets. V??(?) is

(a) 23/4

(b) 31/8

(c) 19/4

(d) 15/4 (correct)

6. Let ? denote the share of money that you get from the left pocket, i.e. ?/? . Calculate the mean of ?
(a) 1/2

(b) 2/3

(c) 11/13

(d) 5/8 (correct)

STATE: The design of controls and instruments affects how easily people can use them. A student project investigated this effect by asking 2525 right‑handed students to turn a knob (with their right hands) that moved an indicator by screw action. There were two identical instruments, one with a right‑hand thread (the knob turns clockwise) and the other with a left‑hand thread (the knob turns counterclockwise). Each of the 2525 students used both instruments. The table gives the times in seconds each subject took to move the indicator a fixed distance.

To access the complete data set, click the link for your preferred software format:

Excel  Minitab  JMP  SPSS TI  R  Mac-TXT   PC-TXT  CSV CrunchIt!

(a) Each of the 2525 students used both instruments. Select the correct explanation describing how randomization works in arranging the experiment.

For each subject, randomly select which knob (right or left) that subject should use first.

For each knob, randomly select which student will turn it.

For each subject, randomly select which hand that subject should use first.

For each instrument, randomly select which student should use it.

PLAN:

(b) The project hoped to show that right‑handed people find right‑hand threads easier to use. Let ?μ be the mean difference in the time needed to do the action (right minus left). State the hypotheses you should use to reach a conclusion.

?0:?=0H0:μ=0

??:?≠0Ha:μ≠0

?0:?=0H0:μ=0

??:?>0Ha:μ>0

?0:?≤0H0:μ≤0

??:?>0Ha:μ>0

?0:?=0H0:μ=0

??:?<0Ha:μ<0

Make a stemplot from the data, then select the correct stemplot from the options.

SOLVE: Calculate the mean ?¯x¯ and standard deviation, ?s. (Enter your answer rounded to three decimal places. If you are using CrunchIt, adjust the default precision under Preferences as necessary. See the instructional video on how to adjust precision settings.)

?¯=x¯=

?=s=

Calculate the ?t‑statistic. (Enter your answer rounded to two decimal places. If you are using CrunchIt, adjust the default precision under Preferences as necessary. See the instructional video on how to adjust precision settings.)

?=t=

Find the degrees of freedom, dfdf . (Enter your answer as a whole number. If you are using CrunchIt, adjust the default precision under Preferences as necessary. See the instructional video on how to adjust precision settings.)

df=df=

What is the ?P‑value. (Enter your answer rounded to four decimal places. If you are using CrunchIt, adjust the default precision under Preferences as necessary. See the instructional video on how to adjust precision settings.)

?=P=

CONCLUDE: What is your conclusion?

Right‑handed people find right‑hand threads easier to use (?<0.01P<0.01).

Right‑handed people do not find right‑hand threads easier to use (0.05<?<0.10.05<P<0.1).

Right‑handed people find right‑hand threads easier to use (0.01<?<0.050.01<P<0.05).

Right‑handed people do not find right‑hand threads easier to use (?>0.1P>0.1).

A researcher believes that alcohol intoxication might severely impair driving ability. To test this, she subjects 10 volunteers to a driving simulation test, first when sober, and then, after drinking amounts sufficient to raise their blood alcohol to .04. The researcher measures performance as the number of simulated obstacles with which the driver collides. Thus, the higher the number, the poorer the driving. The data is in the Excel file in the tab labeled Question 4. Test whether there are differences before and after drinking. Conduct a t-test: Two-Sample for Means.

Before Drinking:

After drinking:

a. What is the null hypothesis?

b. What is the research hypothesis?

c. Why run a Two-Sample for Means t-test?

d. Interpret the findings. What are the results of the hypothesis test? Can you reject the null hypothesis?

So for the question I have, is 50 people responded to a survey question regarding how many pets they currently owned. 5 people said 0, 5 said 1, 7 said 2, 5 said 3, 4 said 4, 3 said 5, 4 said 6, 2 said 7, 2 said 8, 1 said 9, 1 said 11, 1 said 14, 2 said 15, 1 said 18, 1 said 19, 2 said 21, 1 said 32, 1 said 24, and 1 said 27. leaving 10,12,13,16,17, 20, 22, 25,26 with no results.

How do i figure out this below?

Count?, Minimum?, Maximum?,1st Quartile? ,3rd Quartile? ,Median? ,Mean? ,Standard Deviation? ,Mode? ,Z Value for Minimum? .Z Value for Maximum? ,Range? Thank you

Each of the following four sets contains two electrons, each of which is defined by four quantum numbers (n, l, ml, ms). For each set, indicate whether the quantum numbers for the two electrons are valid for the two electrons in the highest energy subshell of a neutral titanium atom. If they are not valid, list the principle that the quantum numbers violate (Pauli Exclusion, Aufbau, or Hund’s Rule) and explain below.

(the numbers are shown below in the order stated below and need to be proven valid or invalid based on the rules above)

Set #: Electron 1: Electron 2: Valid or invalid?: Violation of what rule?:

1 (3, 2, +2, +½)] (4, 1, +1, +½)

2 (3, 2, +1, +½) (3, 2, +1, +½)

3 (3, 2, +2, +½) (3, 2, +1, +½)

4 (3, 2, +1, +½) (3, 2, +1, –½)

Prelab GALVANIC CELLS: THE NERNST EQUATION Cl-1 + MnO4-1  Mn+2 + Cl2 1. Balance the equation using the ion-electron (half-cell) method. Assume acidic solution. 2. Calculate the Eocell . 3. Calculate Ecell when Mn+2 and Cl-1 are each 1.0 M, MnO4-1 is 1.0 x 10-4 M, Cl2 is at 1 atm pressure, and the pH is 3.00. 4. Calculate the equilibrium constant, Keq, for the reaction.