You are camping in Glacier National Park. In the midst of a glacier canyon, you make a loud holler. You hear an echo 1.22 seconds later. A. How far away are the canyon walls if you assume that the speed of sound in air is 343m/s? B. If the temp of the air drops significantly, what would happen to the speed of the sound in the air?

14. The health of the adult dinosaur population in Jurassic Park is monitored by periodic measurements from drugged and sleeping animals. A sample of 54 dinosaurs has mean height of 182.9 in. Assuming that “sigma” is known to be 121.8 in., use a 0.05 significance level to test the claim that the population mean of all such dinosaur heights should be greater than 150 in.

Is the total relativistic energy in 1 kg of ²³⁸U greater than, equal to, or less than the total energy in 1 kg of ¹²C?

You’re in a park listening to a concert that’s 70 m away. The music is faint, and you want the sound intensity to be a factor of 4 times higher. How far from the stage do you need to be?

In many large cities, the government operates a museum, library and park that are visited by a substantial number of people who are not residents of the city. What economic reasons would justify the city financing these services through user charges? What problems would user-charge financing present in these cases? What should the charge be based on, or how should it be structured

For this lab, you will work with two-dimensional lists in Python. Do the following:

1. Write a function that returns the sum of all the elements in a specified column in a matrix using the following header:

   def sumColumn(matrix, columnIndex)

2. Write a function display() that displays the elements in a matrix row by row, where the values in each row are displayed on a separate line. Use a single space to separate different values. Sample output from this function when it is called on a 3 X 4 matrix is as follows:

   2.5 3.0 4.0 1.5
   1.5 4.0 2.0 7.5
   3.5 1.0 1.0 2.5
   

3. Given this partial code

   def getMatrix(numRows, numColumns):
       '''returns a matrix with the specified number of rows and columns'''
       m = [] # the 2D list (i.e., matrix), initially empty
       for row in range(numRows):
           matrix_dimensions_string = str(numRows) + "-by-" + str(numColumns)
           line = input("Enter a " + matrix_dimensions_string + " matrix row for row " + str(row) + ": ")
       
           
       return m    

   write a function called getMatrix(numRows, numColumns) that returns a matrix with numRows rows and numColumns columns. The function reads the values of the matrix from the user on a row by row basis. The values of each row must be entered on one line using a space to separate the values. Use loops in your solution. A sample run of this function when it is caled as getMatrix(3, 4) to return a 3 by 4 matrix is as follows. Values shown in red are entered by the user:

   Enter a 3-by-4 matrix row for row 0: 2.5 3 4 1.5
   Enter a 3-by-4 matrix row for row 1: 1.5 4 2 7.5
   Enter a 3-by-4 matrix row for row 2: 3.5 1 1 2.5
   

Use the following function to test your code:

def main():
    m = getMatrix(3, 4)
    print("\nThe matrix is")
    display(m)

    print()
    for col in range(len(m[0])):
        print("Sum of elements for column %d is %.2f" % (col, sumColumn(m,col)))          

main()

A sample program run is as follows:

Enter a 3-by-4 matrix row for row 0: 1 22 3.7869 8
Enter a 3-by-4 matrix row for row 1: 4 5.6543 3 3
Enter a 3-by-4 matrix row for row 2: 1 1 1 1

The matrix is
1.0 22.0 3.7869 8.0 
4.0 5.6543 3.0 3.0 
1.0 1.0 1.0 1.0 

Sum of elements for column 0 is 6.00
Sum of elements for column 1 is 28.65
Sum of elements for column 2 is 7.79
Sum of elements for column 3 is 12.00

The format of the input and output of your program must be as in the sample run.

The average daily rate of a hotel in Canada as of August 2018 was $182.65. Assume the average daily rate follows a normal distribution with a standard deviation of $25.70.

Standard Normal Distribution Table

a. What is the probability that the average daily rate of a Canadian hotel will be:

(i) less than $175
P(X < 175)=P(X < 175)=

(ii) more than $200
P(X > 200)=P(X > 200)=

(iii) Between $150 and $190
P(150 < X < 190)=P(150 < X < 190)=

b. Determine the average daily rates that separate the:

(i) top 4% of average daily rates from the rest of the daily rates or from the bottom 96% of average daily rates
x=x=

(ii) bottom 15% of average daily rates from the rest of the daily rates
x=x=

(iii) middle 65% of average daily rates from the rest of the daily rates

  < x <  < x <  

Please provide 6 decimal places.

Please provide correct answers. Thanks.

During the Spock Hotel's last audit, the auditor noticed that the financial statements were missing some footnotes important for users using them for decision making. This action by the Spock Hotel is a violation of:

A trial balance is a necessary checkpoint for uncovering certain types of errors before one proceeds to other steps in the accounting process.

True

False

When posting transactions from the general journal to the ledger, ________ will need to be recorded on the journal page.

Le Hotel Cougar purchases $3,000 worth of supplies on July 15th, but they do not have to pay until next month. How should we record this transaction in July?

The food and beverage manager of the Glitz Hotel just got a great deal on beverages for the bar. Instead of buying large 5L containers for $25 each, they instead were able to purchase 1,000 cases of 12-packs of 500ml cans for $26,640. Beverages are served in 500ml servings. Usually, they sell 800 beverages over a weekend, but they actually sold 900 this past weekend. However, 20 customers had to be refunded due to problems with the cans.

Direct labour costs are driven by the number of beverages served. A typical weekend requires four servers each working two 8-hour shifts at $12/hour. At the end of the weekend, actual labour costs were $816.50 for 71 hours.

Required:

A   Calculate the following variances:

Material rate

Material quantity

Direct Labour rate

Direct labour efficiency

B   Briefly explain the variances to the hotel manager, and explain if the variances are somehow interlinked. Assess the special purchase and identify other factors that should be considered.

a)In order to determine the average price of hotel rooms in georgia, a sample of 63 hotels were selected. It was determined that the test statistic (z) was $1.74. We would like to test whether or not the average room price is significantly different from $110. Population standard deviation is known to us.Compute the p-value.

b)In order to determine the average price of hotel rooms in Atlanta, a sample of 36 hotels were selected. It was determined that the average price of the rooms in the sample was $108.4. The population standard deviation is known to be $13. We would like to test whether or not the average room price is significantly different from $110.Compute the test statistic.

c)A sample of 36 account balances of a credit company showed an average balance of $1,179 and a standard deviation of $136. You want to determine if the mean of all account balances is significantly greater than $1,150. Use a 0.05 level of significance. Assume the population of account balances is normally distributed.Compute the test statistic.