Suppose that the birth rates in two hospitals (one rural and one urban) in one week were compared. Would you expect there to be a difference between the percentage of boys and girls born in the two hospitals? Why or why not? In which hospital would it be more likely for the birth rate of boys to be 70%? explain

Is the average time to complete an obstacle course shorter when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye.

Assume a Normal distribution. What can be concluded at the the αα = 0.10 level of significance level of significance?

For this study, we should use Select an answer z-test for a population proportion t-test for the difference between two dependent population means t-test for a population mean t-test for the difference between two independent population means z-test for the difference between two population proportions

1. The null and alternative hypotheses would be:   
2.   

H0:H0:  Select an answer p1 μd μ1  Select an answer > ≠ = <  Select an answer 0 p2 μ2  (please enter a decimal)   

H1:H1:  Select an answer p1 μ1 μd  Select an answer > < = ≠  Select an answer μ2 0 p2  (Please enter a decimal)

2. The test statistic ? z t  =  (please show your answer to 3 decimal places.)
3. The p-value =  (Please show your answer to 4 decimal places.)
4. The p-value is ? ≤ >  αα
5. Based on this, we should Select an answer fail to reject accept reject  the null hypothesis.
6. Thus, the final conclusion is that ...
   • The results are statistically insignificant at αα = 0.10, so there is insufficient evidence to conclude that the population mean time to complete the obstacle course with a patch over the right eye is less than the population mean time to complete the obstacle course with a patch over the left eye.
   • The results are statistically significant at αα = 0.10, so there is sufficient evidence to conclude that the population mean time to complete the obstacle course with a patch over the right eye is less than the population mean time to complete the obstacle course with a patch over the left eye.
   • The results are statistically significant at αα = 0.10, so there is sufficient evidence to conclude that the eight volunteers that were completed the course faster on average with the patch over the right eye compared to the left eye.
   • The results are statistically insignificant at αα = 0.10, so there is statistically significant evidence to conclude that the population mean time to complete the obstacle course with a patch over the right eye is equal to the population mean time to complete the obstacle course with a patch over the left eye.

Dinklage Corp. has 6 million shares of common stock outstanding. The current share price is $72, and the book value per share is $7. The company also has two bond issues outstanding. The first bond issue has a face value of $70 million, a coupon of 7 percent, and sells for 97 percent of par. The second issue has a face value of $50 million, a coupon of 8 percent, and sells for 106 percent of par. The first issue matures in 22 years, the second in 6 years.

a. What are the company's capital structure weights on a book value basis? (Do not round intermediate calculations and round your answers to 4 decimal places, e.g., 32.1616.)

Equity/Value?

Debt/Value ?

b. What are the company’s capital structure weights on a market value basis? (Do not round intermediate calculations and round your answers to 4 decimal places, e.g., 32.1616.)

Equity/Value?

Debt/Value?

c. Which are more relevant, the book or market value weights? Market value or Book value?

In 2012, the General Social Survey asked a random sample of adults, "Compared to most people, how informed are you about politics?" Suppose that the following are the data classified by their responses to this question and their age group (the data has been modified slightly for testing purposes):

Carry out a chi-square test. Test H0: there is no relationship between age and how politically informed the person is versus Ha: there is a relationship between age and how politically informed the person is. Use α=0.01. χ2(±0.0001)= ______

P(±0.0001)= _______

a) There is no a relationship between age and how politically informed the person is

b) There is a relationship between age and how politically informed the person is

The project will study the coordination of multiple threads using semaphores.

The design should consist of two things:

(1) a list of every semaphore, its purpose, and its initial value, and

(2) pseudocode for each function. Code Your code should be nicely formatted with plenty of comments. The code should be easy to read, properly indented, employ good naming standards, good structure, and should correctly implement the design. Your code should match your pseudocode.

Project Language/Platform

This project must target a Unix platform and execute properly on our cs1 or csgrads1 Linux server.

The project must be written in Java. Elevator Simulation In this project threads are used to simulate people using an elevator to reach their floor.

The threads to be used are as follows: Person:

1) 49 people are in line at the elevator at the beginning of the simulation (1 thread per person).

2) Each person begins at floor 1.

3) Each person randomly picks a floor from 2 to 10.

4) A person will wait for an elevator to arrive at floor 1.

5) A person will board the elevator only if there is room.

6) Once at the destination floor, the person exits the elevator.

Elevator:

1) There is 1 elevator (1 thread for the elevator).

2) The elevator can only hold 7 people.

3) The elevator begins on floor 1.

4) The elevator leaves after the 7th person enters.

Main

1) Creates all threads and joins all person threads.

2) When last person reaches their floor, the simulation ends.

Other rules:

1) Each activity of each thread should be printed with identification (e.g., person 1).

2) A thread may not use sleeping as a means of coordinating with other threads.

3) Busy waiting (polling) is not allowed.

4) Mutual exclusion should be kept to a minimum to allow the most concurrency.

5) The semaphore value may not obtained and used as a basis for program logic.

6) All activities of a thread should only be output by that thread. Sample output:

Your project’s output should match the wording of the sample output:

Elevator door opens at floor 1

Person 0 enters elevator to go to floor 5

Person 1 enters elevator to go to floor 2

Person 2 enters elevator to go to floor 8

Person 3 enters elevator to go to floor 4

Person 4 enters elevator to go to floor 6

Person 5 enters elevator to go to floor 7

Person 6 enters elevator to go to floor 2

Elevator door closes

Elevator door opens at floor 2

Person 1 leaves elevator

Person 6 leaves elevator

Elevator door closes

Elevator door opens at floor 4

Person 3 leaves elevator

Elevator door closes

Elevator door opens at floor 5

Person 0 leaves elevator

Elevator door closes

Elevator door opens at floor 6

Person 4 leaves elevator

Elevator door closes

Elevator door opens at floor 7

Person 5 leaves elevator

Elevator door closes

Elevator door opens at floor 8

Person 2 leaves elevator

Elevator door closes

Elevator door opens at floor 1

…

Simulation done

7) In a completely randomized design, 4 experimental units were used for each of the seven levels of the factor. Source of Variation Sum of Squares Degrees of Freedom Mean Square F Treatment 385.12 Error Total 1563.71

i. Complete the ANOVA table.

ii. Find the F critical, and use the critical value approach at α = 0.05 to test whether the population means for the four levels of the factors are the same. (1 mark)

Assume that the duration of human pregnancies can be described by a Normal model with mean 268 days and standard deviation 16 days. ​a) What percentage of pregnancies should last between 274 and 285 ​days? ​b) At least how many days should the longest 15​% of all pregnancies​ last? ​c) Suppose a certain obstetrician is currently providing prenatal care to 51 pregnant women. Let y overbar represent the mean length of their pregnancies. According to the Central Limit​ Theorem, what's the distribution of this sample​ mean, y overbar​? Specify the​ model, mean, and standard deviation. ​d) What's the probability that the mean duration of these​ patients' pregnancies will be less than 258 ​days? ​a) The percentage of pregnancies that should last between 274 and 285 days is nothing​%. ​(Round to two decimal places as​ needed.) ​b) The longest 15​% of all

pregnancies should last at least nothing days. ​(Round to one decimal place as​ needed.) ​c) Select the correct choice below​ and, if​ necessary, fill in the answer​ box(es) within your choice. A. A Binomial model with nothing trials and a probability of success of nothing ​(Type integers or decimals rounded to two decimal places as​ needed.) B. A Normal model with mean nothing and standard deviation nothing ​(Type integers or decimals rounded to two decimal places as​ needed.) C. There is no model that fits this distribution. ​d) The probability that the mean duration of these​ patients' pregnancies will be less than 258 days is nothing.

1.

2.

4. The only thing that changes in Dullsville is the price of a stay at the Dullsville Inn. You've collected the following data on the rates charged (for a suite with 2 queen-sized beds and 'free' continental breakfast) and the number of rooms occupied. The Inn has 100 suites, and at no time were potential visitors turned away due to no vacancy. Use this data to estimate a 'constant elasticity' demand function. Estimate the price elasticity of demand.                                                                                                                     

                Observation          Rate per night       Quantity (rooms rented)                   

                1              $70         40                          

                2              $65         50                          

                3              $80         30                          

                4              $52         62                          

                5              $92         31                          

                6              $64         41                          

                7              $43         78                          

                8              $74         35                          

                9              $83         33                          

                10           $54         52                          

                11           $87         30                          

                12           $84         28                          

                13           $68         40                          

                14           $43         69                          

                15           $48         53                          

                16           $78         34                          

                17           $72         48                          

                18           $58         53                          

                19           $56         59      

1) You measure 42 textbooks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 9.6 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places.

__< μ < __

2) Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 70 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 17.2 and a standard deviation of 3.9. What is the 80% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).
__ < μ < __

3) 44% of 84 delegates in a policitcal convention favored changing the rules to restrict the number of potential candidates. What is the 80% confidence interval for the population proportion.
Give your answers as decimals, to two places.

__ < p < __