What is the fraction of HA dissociated at a pH of 6.10 if Ka = 1.8 x 10-5? 0% 4% 100% 96%

Which of the following is true about the shape of the titration curve for a 0.1 M weak acid being titrated with a 0.2 M strong base as compared to a 0.1 M strong acid being titrated with a 0.2 M strong base?

The equivalence point volume will shift to the left.

It will start at a lower pH.

The equivalence point pH will be larger.

The equivalence point volume will shift to the right.

What is the volume at the equivalence point when 30.0 mL of 0.25 M HCl are titrated with 0.40 M NaOH at T = 298 K? K_w = 1.00 x 10^-14.

18.8 mL

30.0 mL

7.00 mL

37.6 mL

A local car dealer closes on Sundays at 6:00 pm. He counts the number

of cars available at that time. If there are two or less, order enough to

raise the level to six. Cars are delivered at night and are available when

the exhibition hall opens at 9:00 a.m. on Monday morning. Let Pd (x) be

the probability that the demand during the week is equal to x: Suppose that:

Pd (0) = 0.2 ,Pd (1) = 0.5 ,Pd (2) = 0.2 ,Pd (3) = 0.1

If there is more demand than cars during the week than those available at the

start of it, the excess demand is wasted and the distributor ends the week with

zero cars available. Define a markov chain where states are numbers of cars

available on Monday morning at 9:00 am. Find the transition matrix.

1.Vaughn Manufacturing can produce and sell only one of the following two products: Oven Contribution Hours Required Margin Per Unit Muffins 0.2 $7 Coffee Cakes 0.3 $8 The company has oven capacity of 3750 hours. How much will contribution margin be if it produces only the most profitable product?

2.How much sales are required to earn a target income of $340000 if total fixed costs are $500000 and the contribution margin ratio is 40%?

3.Bramble Corp. manufactures a product with a unit variable cost of $100 and a unit sales price of $186. Fixed manufacturing costs were $480000 when 10000 units were produced and sold. The company has a one-time opportunity to sell an additional 1000 units at $125 each in a foreign market which would not affect its present sales. If the company has sufficient capacity to produce the additional units, acceptance of the special order would affect net income as follows:

4. Bramble’s CVP income statement included sales of 6200 units, a selling price of $50, variable expenses of $30 per unit, and net income of $25000. Fixed expenses are $310000. $99000. $124000. $186000.

5.It costs Concord Corporation $12 of variable and $5 of fixed costs to produce one bathroom scale which normally sells for $35. A foreign wholesaler offers to purchase 2300 scales at $15 each. Garner would incur special shipping costs of $1 per scale if the order were accepted. Concord has sufficient unused capacity to produce the 2300 scales. If the special order is accepted, what will be the effect on net income? $4600 decrease $6900 decrease $4600 increase $34500 increase

6.Swifty Corporation produces 1000 units of a necessary component with the following costs: Direct Materials $31000 Direct Labor 12000 Variable Overhead 11000 Fixed Overhead 10000 Swifty Corporation could avoid $6000 in fixed overhead costs if it acquires the components externally. If cost minimization is the major consideration and the company would prefer to buy the components, what is the maximum external price that Swifty Corporation would accept to acquire the 1000 units externally? $53000 $58000 $60000 $54000

7.In applying the high-low method, what is the fixed cost? Month Miles Total Cost January 86000 $182000 February 64000 160000 March 78000 178000 April 94000 220000 $32000 $22000 $42000 $60000

8.At the high level of activity in November, 5000 machine hours were run and power costs were $18000. In April, a month of low activity, 1000 machine hours were run and power costs amounted to $9000. Using the high-low method, the estimated fixed cost element of power costs is $6750. $11250. $18000. $9000.

9.The required sales in units to achieve a target net income is (sales + target net income) divided by contribution margin per unit. (fixed cost + target net income) divided by contribution margin ratio. (sales + target net income) divided by contribution margin ratio. (fixed cost + target net income) divided by contribution margin per unit. Click if you would like to Show Work for this question: Open Show Wor

10.Variable costs for Coronado Industries are 40% of sales. Its selling price is $75 per unit. If Coronado sells one unit more than break-even units, how much will profit increase?

11.Crane Company produces only one product. Monthly fixed expenses are $13000, monthly unit sales are 5000, and the unit contribution margin is $10. How much is monthly net income? $63000 $0 $50000 $37000

12.Crane Company produces 1000 units of a necessary component with the following costs: Direct Materials $36000 Direct Labor 25000 Variable Overhead 5000 Fixed Overhead 7000 None of Crane Company‘s fixed overhead costs can be reduced, but another product could be made that would increase profit contribution by $8000 if the components were acquired externally. If cost minimization is the major consideration and the company would prefer to buy the components, what is the maximum external price that Crane Company would be willing to accept to acquire the 1000 units externally? $76000 $74000 $63000 $69000

13.Sheridan Company’s unit manufacturing cost is: Variable Costs $50 Fixed Costs 25 A special order for 2000 units has been received from a foreign company. The unit price requested is $54. The normal unit price is $95. If the order is accepted, unit variable costs will increase by $2 for additional freight costs. If the order is accepted, incremental profit (loss) will be $4000. $(42000). $40000. $(46000).

14.Sheffield Corp. can produce 100 units of a component part with the following costs: Direct Materials $20000 Direct Labor 4500 Variable Overhead 14000 Fixed Overhead 11000 If Sheffield Corp. can purchase the component part externally for $45000 and only $4000 of the fixed costs can be avoided, what is the correct make-or-buy decision?

A survey of a sample of 26 hotels in New Orleans found that the average hotel room rate s $88.42 with a standard deviation of $5.62 and another survey of 25 hotels in the Phoenix area found that the average room rate is $80.61. Assume with a standard deviation of $4.83. At α =  0.05, can it be concluded that there is a significant difference in the rates?
Source: USA TODAY.
Make sure to state Ho, H1 and where the claim is
State the value of the test statistic
Calculate the p-value
Make a decision to reject Ho or fail to reject Ho
State your conclusion in words in the context of the claim
You may use your TI 84 but make sure to state the name of the test you used.
When using calculator and when it comes to choose Yes or No for pooled, keep it at the default No.
Here is what pooled means: If we assume that population variances are equal we select YES and if we assume that population variances are not equal, we select No. By default, use No unless if it is specified otherwise.

Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of 24 days of operation shows a sample mean of 299 rooms occupied per day and a sample standard deviation of 32 rooms.

What is the point estimate of the population variance?

Provide a 90% confidence interval estimate of the population variance (to 1 decimal).
( ___,____ )

Provide a 90% confidence interval estimate of the population standard deviation (to 1 decimal).

(____,_____)

It is interesting to determine whether the rates of a hotel in Los Angeles, Atlanta, Houston, and Phoenix are the same or not. Seven hotels are sampled in Los Angeles, five hotels are sampled in Atlanta and Houston, while six hotels are sampled in Phoenix. Data are not reported, only the mean and standard deviation for each city are given for statistical analysis.

A) State the Null and alternative hypothesis you are testing

B) Compute the respective SS and fill in the ANOVA table to summarize the comparison.

C) Based on the F value, what is your conclusion, use a= 0.025. What is the best you can say about the P value based on the F tables.

D) Find the 95% confidence interval’s for the true average of Los Angeles and Atlanta.

A hotel in Saint Augustine books an average of 50 rooms per night. There is a standard deviation of 10 rooms per night. What is the probability that...

a) more than 50 rooms are booked on a given night?

b) between 50 and 60 rooms are booked on a given night?   

c) 60 rooms or less are booked on a given night?   

d) between 30 and 70 rooms are booked on a given night?

e) less than 40 rooms are booked on a given night?

Glitz hotel is going to make a $2,000,000 investment by completing renovating a floor of the hotel. The floorplan will be entirely redone, and they can have a mix of three types of rooms: Luxury Suites, Large rooms, or Regular rooms. Due the size of the floor, they can build a maximum of 20 luxury suites or a maximum of 40 large rooms or a maximum of 60 regular rooms or a mix of all three.

Luxury suites will rent for $400 per night.

Lrrge rooms will rent for $200 per night.

Regular rooms will rent for $135 per night.

The cost to maintain each room, excluding depreciation, is $30/night ($25 in variable maintenance and $5 in fixed booking costs).

The food and beverage manager noted that since the suites are often used for conventions as private hospitality suites, they purchase an average of $200 per night in room service. Large rooms purchase an average of $40 and Regular $10 per night for room service. Room service generates a 70% gross profit. The cleaning manager noted that the suites generally require an extra $10/night in cleaning costs due to these conventions.

Estimated maximum demand per night is as follows:

Suites:10 rooms

Large: 25 rooms

Regular: no maximum demand

How many of each room should they build as part of the renovation?

Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of 29 days of operation shows a sample mean of 300 rooms occupied per day and a sample standard deviation of 35 rooms.

1. What is the point estimate of the population variance?
   
   
2. Provide a 90% confidence interval estimate of the population variance (to 1 decimal).
   (  ,  )
   
3. Provide a 90% confidence interval estimate of the population standard deviation (to 1 decimal).
   (  ,  )

a) In order to determine the average price of hotel rooms in Atlanta. Using a 0.1 level of significance, we would like to test whether or not the average room price is significantly different from $110. The population standard deviation is known to be $16. A sample of 64 hotels was selected. The p-value associated with the test statistic (z) is calculated and it is 0.03. We conclude that the average price of hotel rooms in Atlanta is NOT significantly different from $110. (Enter 1 if the conclusion is correct. Enter 0 if the conclusion is wrong.)

b) A sample of 27 account balances of a credit company showed an average balance of $1,169 and a standard deviation of $139. 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.

c) A sample of 30 account balances of a credit company showed an average balance of $1,170 and a standard deviation of $125. You want to determine if the mean of all account balances is significantly greater than $1,150. Assume the population of account balances is normally distributed. Compute the p-value for this test.

d) A sample of 28 account balances of a credit company was taken to test whether the mean of all account balances is significantly greater than $1,150. Using the sample standard deviation, the test statistic (t) was calculated to be $1.89. We use a 0.05 level of significance. Assume the population of account balances is normally distributed and the population standard deviation is unknown to us. We conclude that the mean of all account balances is significantly greater than $1,150. (Enter 1 if the conclusion is correct. Enter 0 if the conclusion is wrong.)