Does Elevation Affect Temperature Mid-June?
Suppose that you wanted to determine the effect, if any, that elevation has on temperature. The table below lists the elevations (in feet above sea level) of 24 randomly selected cities in the United States and the low temperatures (in degrees Fahrenheit) of these cities on June 15, 2020.

Our eyes can be fooled by how strong a linear relationship is; we need to use a numerical measure, the correlation coefficient, to accurately describe the association between elevation and low temperature. Correlation measures the strength and direction (type) of linear relationships.

This is quite tedious to compute by hand, so we will use our calculator to obtain the value of r.

Using your calculator, press STAT, choose CALC, then 8: LinReg (a+bx). Enter L₁, L₂. Then press the ENTER key to get the correlation coefficient (rounded to 4 decimal places).

r ≈                                           

Given the value of r above, what is the strength of the linear relationship?            Weak        Moderate      Strong

When a scatterplot shows a linear relationship, we would like to summarize the overall pattern by drawing a line on the scatterplot. A regression line describes how a response variable changes as an explanatory variable changes. The least-squares regression line is the line that makes the sum of the squares of the vertical distances of the data points to the line as small as possible.

The form of the equation of a line is y = a + bx where a is the y-intercept, the value of y when x=0, and b is the slope, the amount y changes when x increases by one unit.

Using your calculator, press STAT, choose CALC, 8: LinReg (a+bx). Enter L₁, L₂. Then press the ENTER key to get the coefficients for the least-squares regression line (don't round).  

a =                                                      

b =                                                      

The equation of the least-squares regression line is: _________________________________________________

The coefficient of determination, r², is the proportion of the variation in the values of y that is explained by the linear relationship with x.

r² ≈                                 for this data (write as a decimal rounded to four decimal places)

a) A researcher wants to test if boys spend more time playing sports on average than girls. Data is collected, resulting in the table below. It is known that the times for sports have a normal distribution in general.

Compute the test statistic that is corresponding to the test in the question 9.

Round your answer to two decimal digits.

b)

Let the significance level be 0.05.

Can we reject the null hypothesis?

If we can, choose TRUE, and if not, choose FALSE

Answer in sentences and be logical!
(a) What does it mean for two events to be disjoint? What does it mean for two events to be independent? Give an example of each [not from parts (b) and (c)!].
(b) Consider a family with two children and define the events
            G₁ = { 1^st child is a girl }
            G₂ = { 2^nd child is a girl }
Using these events, discussion the question: Are independent events always disjoint?
(c) Consider a family with one child and define the events
            B = { child is a boy }
            G = { child is a girl }
Using these events, discussion the question: Are disjoint events always independent?

Challenge problem:Critical mass is the smallest amount of radioactive material necessary to sustain a nuclear chain reaction. Uranium-235, the isotope of uranium used in the "little boy" bomb dropped on Hiroshima during Wordl War II,has a critical mass of 52 kg. How many long tons of yellowcake (64% uranium by mass) need to be processed to produce a critical mass of U-235? The percent natural abundance of U-235 is 0.72% and its nuclide mass is 235.0439 amu.

1 long ton = 2240 lb., 1 kg = 2.20 lb.

What is your understanding about Gender Dysphoria and transsexuality? Provide an example of each. Has this understanding change or changed your attitude, perceptions, or views about these gender roles? Why or why not? Can you think of ways in which you encourage social influences that impact the development of gender orientation from early childhood? Would you dress a little boy in a pink shirt? How do you think cartoons and movies impact gender stereotypes? What dilemmas do parents of intersex individuals face? What does "gender neutral" mean?

What Can The Late George Steinbrenner and the New York Yankees Teach Us About Economies and Diseconomies of Scale? From 1972-1976 the Oakland A's and Cincinnati Reds won all five of baseball's World Series Championships. Despite this amazing success, only 5 of those players went on to the baseball Hall of Fame. These teams dominated baseball. That is a total of 660+ possible players with less than 1% of them making it to the Hall of Fame as part of baseball's elite. When George Steinbrenner took over the Yankees in the early 1970's he wanted to have the best players at every position. In 1977-1978 it worked - they won 2 straight World Series titles - only two of players on that team (both former Oakland A's) made it to the baseball Hall of Fame. Most of the other players on the team came through the Yankees minor league farm system or were received in trades. Despite all the NYY successes since George initially purchased the team, they have had only one player elected to the Baseball Hall of Fame in the Steinbrenner Era. In the 1980's George pushed for better players and he got them - stacking his teams with perennial All-Star caliber players, paying them untold millions of dollars in salary. What did He get for that? He got the Yankees to perform as one of the worst teams in baseball from 1982-1991....What happened? What did George S. not understand about Economies of Scale and Dis-economies of Scale?

Based on the Sporty Cars data, is "road test" a good predictor of Price at the 95% confidence level?

Select one: a. No, the R^2 statistic indicates that only 30% of the variability in price is explained by road test. b. No, the F-statistic indicates that the regression does not explain price significantly at the ninety five percent level. c. No, the t-statistic indicates that the coefficient on road test is not significantly different than zero at the 95% confidence level. d. All of the above are true.

How might the regression model be improved?

Select one:

a. Adding other explanatory variables such as years of age, miles and condition.

b. Adding data, including more observations for both price and road test score.

c. Both A and B could help improve model predictive accuracy.

d. Nothing can be done to improve regression accuracy; the results are final.

Background Information:

Please show work in Excel

In 2010, the Top-slice Golf Company decided to augment their very successful line of golf clubs with a new line of professional caliber golf balls. The executives at Top-Slice were aware of the difficulty of penetrating the golf ball market but feel, with their name recognition and the possibility of receiving endorsements from tour professionals that were playing Top-Slice clubs, chances for success were substantial. The company purchased $175 million of equipment and buildings in 2011 to begin production. The Top-Slice golf ball has not performed up to expectations. The tour professionals did not care for the ball and did not endorse it. Significant improvements in golf balls by Callaway and Nike and the continued dominance of the Titleist ProV1 series made entering the market very difficult.

On July 1, 2017, the Board of Directors voted to sell off the golf ball manufacturing division. The company continued to operate the facility at current levels of production until the sale of the division was completed on June 1, 2018. Top-Slice has a April 30 year end and the controller and CEO are concerned about the proper reporting for the disposal of the golf ball manufacturing division in the year-end April 30, 2018 financials. The company wants to issue the financial statements to the public by the end of June 2018.   You are to draft a report to the controller and CEO identifying the issues and accounting choices associated with reporting the disposal and the authoritative guidance that exists to determine the proper manner of reporting the assets, liabilities, and results of operation for the division.

Assignment 2

USE GAAP

INCLUDE US GAAP CODIFICATION (CITATIONS)

In 2010, the No-slice Golf Company decided to augment their very successful line of golf clubs with a new line of professional caliber golf balls. The executives at No-Slice were aware of the difficulty of penetrating the golf ball market but feel, with their name recognition and the possibility of receiving endorsements from tour professionals that were playing No-Slice clubs, chances for success were substantial. The company purchased $175 million of equipment and buildings in 2011 to begin production. The No-Slice golf ball has not performed up to expectations. The tour professionals did not care for the ball and did not endorse it. Significant improvements in golf balls by Callaway and Nike and the continued dominance of the Titleist ProV1 series made entering the market very difficult.

On July 1, 2017, the Board of Directors voted to sell off the golf ball manufacturing division. The company continued to operate the facility at current levels of production until the sale of the division was completed on June 1, 2018. No-Slice has a April 30 year end and the controller and CEO are concerned about the proper reporting for the disposal of the golf ball manufacturing division in the year-end April 30, 2018 financials. The company wants to issue the financial statements to the public by the end of June 2018.   You are to draft a report to the controller and CEO identifying the issues and accounting choices associated with reporting the disposal and the authoritative guidance that exists to determine the proper manner of reporting the assets, liabilities, and results of operation for the division.

In 2010, the Top-slice Golf Company decided to augment their very successful line of golf clubs with a new line of professional caliber golf balls. The executives at Top-Slice were aware of the difficulty of penetrating the golf ball market but feel, with their name recognition and the possibility of receiving endorsements from tour professionals that were playing Top-Slice clubs, chances for success were substantial. The company purchased $175 million of equipment and buildings in 2011 to begin production. The Top-Slice golf ball has not performed up to expectations. The tour professionals did not care for the ball and did not endorse it. Significant improvements in golf balls by Callaway and Nike and the continued dominance of the Titleist ProV1 series made entering the market very difficult.

On July 1, 2017, the Board of Directors voted to sell off the golf ball manufacturing division. The company continued to operate the facility at current levels of production until the sale of the division was completed on June 1, 2018. Top-Slice has a April 30 year end and the controller and CEO are concerned about the proper reporting for the disposal of the golf ball manufacturing division in the year-end April 30, 2018 financials. The company wants to issue the financial statements to the public by the end of June 2018.   You are to draft a report to the controller and CEO identifying the issues and accounting choices associated with reporting the disposal and the authoritative guidance that exists to determine the proper manner of reporting the assets, liabilities, and results of operation for the division.