The average length of stay (LOS) from U.S. short-stay hospitals for a sample of 25 male pneumonia patients was $5.5$ days with a standard deviation of $1.2$ days. For a sample of 25 females, the average LOS was $5.9$ days with a standard deviation of $2.2$ days. (a) Assuming equal variances, is there a significant difference at $\alpha=.10$ ? (b) Calculate the $p$-value using Excel.

A cyclotron designed to accelerate protons has a magnetic field of magnitude 0.450 T over a region of radius 1.20 m What are (a) the cyclotron frequency and (b) the maximum speed acquired by the protons?

McLeansboro Oil Company acquired a small oil company with only three assets during a recent year. The assets were acquired for $1,350,000 cash.

$$\begin{array}{lrr} \text { Asset } & \text { Fair Value } & \text { Expected Life } \\ \hline \text { Oil } & \$ 1,125,000 & 55,000 \text { barrels } \\ \text { Land } & 78,000 & \text { Indefinite } \\ \text { Equipment } & 62,000 & 550,000 \text { barrels } \end{array}$$

Required:

Why are the land and the equipment capitalized separately from the oil well?

In a community of M men and W women, m men and w women smoke (m $\leq$ M,w $\leq$ W). If a person is selected at random and A and B are the events that the person is a man and smokes, respectively, under what conditions are A and B independent?

A rectangular community garden is to be enclosed with 92 m of fencing. In order to allow for compost storage, the garden must be 4 m longer than it is wide. Determine the dimensions of the garden.

A building acquired at the beginning of the year at a cost of $1,450,000 has an estimated residual value of$300,000 and an estimated useful life of 10 years. Determine the annual straight-line depreciation.

The most commonly used radiometric dating method by the engineering community is:

A. Radon 75 $\\$ B. Boron 13$

$$C. Uranium 238$$

$$D. all of the above$$

$ E. none of the above

Indicate whether each of the following transactions is an asset source (AS), asset use (AU), asset exchange (AE), or claims exchange (CE) transaction.

• Acquired cash from the issue of stock.

High water temperatures and pollution can cause corals to expel their dinoflagellate symbionts. Predict how such "coral bleaching" would affect corals and other species in the community.

A patient is admitted with severe lobar pneumonia. Which of the following assessment findings would indicate that the patient needs airway suctioning?

1. Coughing up sputum occasionally
2. Coughing up thin, watery sputum after nebulization
3. Decreased ability to clear airway through coughing
4. Lung sounds clear only after coughing

What concepts or ideas should govern the placement of your transect to obtain a representative sample of the community? Are there any "wrong" places to put a transect? Why or why not?

The given data shows the membership fees of three different gyms.

Workout Now - 200 dollar plus 45 dollar per month

Community Gym - 50 dollar plus 55 dollar per month

Ultra Sports Club - 20 dollar plus 60 dollar per month

After how many months will the fees for Workout Now and Community Gym be the same?

A . 2.5

B. 15

C . 25

D. 30

Most community water supplies have 0.5 ppm of chlorine added for purification. What mass of chlorine must be added to 100.0 L of water to achieve this level?

The square dance floor at the local community building is being replaced. The floor's side length is $32+\sqrt{13}$ feet. What is the area of the dance floor?