Aliens are observing a park in new york. They notice a merry-go-round has a radius of 3.12m and a moment of inertia of 3100kgm^2 at the vertical axis through the center. The contraption has been lubricated recently so there is no friction. one of the earthlings applies a tangential force of 19N for 13s begging at rest. Unfortunaley after gathering this data the aliens computer broke so now they must calculate the work that was done over the course of the 13s.

The marketing brochure for a travel agency shows that the standard deviation of hotel room rates for two cities is the same. Table 7is given the per day room rate in Pak Rs.

Can you reject the agency claim at α=0.05

“Marriott International announced in November 2018 that attackers had stolen data on approximately 500 million customers. The breach initially occurred on systems supporting Starwood hotel brands starting in 2014. The attackers remained in the system after Marriott acquired Starwood in 2016 and were not discovered until September 2018.”(sourced from a published report) Referring to the case given, list and explain 2 steps that can help prevent data breach like this.

Create a list and rank the following products/services using intangibility. The list will rank tangible goods at the top and totally intangible services at the bottom. Briefly explain each category as well.

C PROGRAMMING

Build a hotel management program. The user will register their name and put their check-in time and check-out time. They can choose their type of room they stay (Deluxe room, junior suite room, suite room, presidential suite room). Then, the program will determine the total price.

*NOTE
- Using modular, user-friendly, and array usage programming. Please don't use struct/structure and pointer.
- Please give explanation about the code.

Jane Botosan operates a bed and breakfast hotel in a resort area near Lake Michigan. Depreciation on the hotel is $60,000 per year. Jane employs a maintenance person at an annual salary of $32,000 and a cleaning person at an annual salary of $24,000. Real estate taxes are $10,000 per year. The rooms rent at an average price of $60 per person per night including breakfast. Other costs are laundry and cleaning service at a cost of $10 per person per night and the cost of food which is $5 per person per night.

Instructions (a) Determine the number of rentals and the sales revenue Jane needs to break even using the contribution margin technique.

(b) If the current level of rentals is 3,500, by what percentage can rentals decrease before Jane has to worry about having a net loss?

(c) Jane is considering upgrading the breakfast service to attract more business and increase prices. This will cost an additional $3 for food costs per person per night. Jane feels she can increase the room rate to $66 per person per night. Determine the number of rentals and the sales revenue Jane needs to break even if the changes are made.

Again, there is research on the relationship between gender and sense of direction. Recall that, in their study, the spatial orientation skills of 30 male and 30 female students were challenges in a wooded park near the Boston College campus in Newton, Massachusetts. The participants were asked to rate their own sense of direction as either good or poor.

In the park, students were instructed to point to predesignated landmarks and also to the direction of south. For the female students who had rated their sense of direction to be good, the table above provides the pointing errors (in degrees) when they attempted to point south.

1. If, on average, women who consider themselves to have a good sense of direction do not better than they would by just randomly guessing at the direction of south, what would their mean pointing error be?
2. At the 1% significance level, do the data provide sufficient evidence to conclude that women who consider themselves to have a good sense of direction really do better, on average, than they would by just randomly guessing at the direction of south? Use a one-mean t-test.
3. Obtain a normal probability plot, boxplot, or stem-and-leaf diagram of the data. Based on this plot, is use of the t-test reasonable? Explain your answer.

The Crane Hotel opened for business on May 1, 2022. Here is its trial balance before adjustment on May 31.

Other data:

Prepare a ledger using T-accounts. Enter the trial balance amounts and post the adjusting entries. (Post entries in the order of journal entries presented in the previous question.)

Jane Botosan operates a bed and breakfast hotel in a resort area near Lake Michigan. Depreciation on the hotel is $60,000 per year. Jane employs a maintenance person at an
annual salary of $41,000 and a cleaning person at an annual salary of $24,000. Real estate taxes are $10,000 per year. The rooms rent at an average price of $60 per person per night
including breakfast. Other costs are laundry and cleaning service at a cost of $10 per person per night and the cost of food which is $5 per person per night.

Instructions:

1. Determine the number of rentals and the sales revenue Jane needs to break even using the contribution margin technique.

2. If the current level of rentals is 4,000, by what percentage can rentals decrease before Jane has to worry about having a net loss?

3. Jane is considering upgrading the breakfast service to attract more business and increase prices. This will cost an additional $3 for food costs per person per night. Jane feels she
can increase the room rate to $68 per person per night. Determine the number of rentals and the sales revenue Jane needs to break even if the changes are made.

1) A new cream that advertises that it can reduce wrinkles and improve skin was subject to a recent study. A sample of 63women over the age of 50 used the new cream for 6 months. Of those 63women, 36 of them reported skin improvement(as judged by a dermatologist). Is this evidence that the cream will improve the skin of more than 60% of women over the age of 50? Test using ?=0.01

(a) Test statistic: ?=

(b) Critical Value: ?∗=

2) A survey of 1325 people who took trips revealed that 140 of them included a visit to a theme park. Based on those survery results, a management consultant claims that less than 12% of trips include a theme park visit. Test this claim using the ?=0.01 significance level.

The test statistic is ?

The critical value is?

3) A new cream that advertises that it can reduce wrinkles and improve skin was subject to a recent study. A sample of 54 women over the age of 50 used the new cream for 6 months. Of those 54 women, 32 of them reported skin improvement(as judged by a dermatologist). Is this evidence that the cream will improve the skin of more than 60% of women over the age of 50? Test using ?=0.05

test statistics ?=

rejection region ?>