Calculate D_rxnH

A local college newsletter reported that the average American college student spends one hour​ (60 minutes) on a social media website daily. But you wonder if there is a difference between males and females. Attached below is a sample of 60 users of the website​ (30 males and 30​ females) and their recorded daily time spent on the website. Complete​ (a) and​ (b) below.

a. Assuming that the variances in the population of times spent on the website per day are​ equal, is there evidence of a difference in the mean time spent on the website per day between males and​ females? (Use a 0.05 level of​ significance.)

Let m1 be the mean daily time spent on the website for male college students and m2 be the mean daily time spent on the website for female college students. Determine the hypotheses. Choose the correct answer below.

Determine the test statistic.

Find the​ p-value.

Choose the correct conclusion below.

b. In addition to equal​ variances, what other assumption is necessary in​ (a)?

A. In addition to equal​ variances, it must be assumed that the samples are specifically chosen and not independently sampled.

B. In addition to equal​ variances, it must be assumed that the sample means are equal.

C.In addition to equal​ variances, no other assumptions must be made because the sample sizes are large enough ​(greater than or equals≥30 for each​ sample).Your answer is correct.

D. In addition to equal​ variances, it must be assumed that the population sizes are equal.

You are a professional robber planning to rob houses along a street. Each house has

a certain amount of money stashed, the only constraint stopping you from robbing

each of them is that adjacent houses have security system connected and it will

automatically contact the police if two adjacent houses were broken into on the same night.

Given a list of non-negative integers representing the amount of money of each house,

determine the maximum amount of money you can rob tonight without alerting the

police.

What is the data rate of the following system:  

The system sends sends a set of twp 7-bit ASCII characters as a block. The block is proceeded by 1 start bit. After the two character block there is 1 parity bit and 2 stop bits? The bit time for this system is 0.0000025 seconds per bit.

What is the data rate of the following system:  

15.The HIV virus that causes AIDS suppresses the immune response because

Select one:

a. it attacks memory B lymphocytes.

b. it causes opportunistic infections.

c. it attacks plasma cells.

d. it attacks memory T lymphocytes.

e. it attacks CD4+ T lymphocytes.

16.

Cells infected with a virus will display the antigens of the virus they are infected with via the MHC-I protein.

Select one:

True

False

Suppose inflation rate is 6% for the past year. The inflation rate is expected to be 5% in the coming year and 4% per year thereafter. Assume that the real risk free rate r*, will remain at 2% over the next 10 years. The yield on a 5-year Treasury bond is 6.3% and the yield on a 10-year corporate bond is 8.4%. A 5-year corporate bond has the same maturity risk premium as the 5-year Treasury bond described. The 5-year corporate bond also has the same default risk premium and liquidity premium as the 10-year corporate bond described. Given that the maturity risk premium for the 10-year corporate bond is 0.3%, what is the yield on the 5-year corporate bond?

Ans : 8.3%

Part A

A balloon is floating around outside your window. The temperature outside is 27 ∘C , and the air pressure is 0.800 atm . Your neighbor, who released the balloon, tells you that he filled it with 3.50 moles of gas. What is the volume of gas inside this balloon?

Part B

A 12.0 L gas cylinder is filled with 7.60 moles of gas. The tank is stored at 31 ∘C . What is the pressure in the tank?

Part C

A 140. L kiln is used for vitrifying ceramics. It is currently operating at 1095 ∘C , and the pressure is 1.000 atm . How many moles of air molecules are within the confines of the kiln?

A series of object are being rotated. The same net torque is being applied to each object. Rank the object in order of the resulting angular acceleration (1=lowest).

A solid disk spinning about its center. Total mass is M and a radius of 2R.
A hoop spinning about its center. Total mass is M and the radius is R.
An object consisting of two objects connected by a massless rod. Each object has a mass of 2M and is a distance R from the axis of rotation.
A solid disk spinning about its center. Total mass is M and a radius of R.

Medical Calculator

Create a python program that allows the user to enter the following patient information:

• First name and Last name
• gender
• age
• weight
• height
• systolic pressure and diastolic pressure
• current body temperature in degrees Fahrenheit

Once the information is entered then the results should be printed on the display based on the information below:

• BMI
• Temp Conversion
• Mean Blood Pressure
• Weight Conversion (lbs to kg)
• Height Conversion (inches to cm)

Output should be in the following format:

First Name Last Name is ___ cm and ___ kg's. First Name Last Name has a BMI of ___ , a temperature of ___ degrees Celsius, and his or her Mean Blood pressure is ___ mmHG. Mr or Ms Last Name is considered ____ (from the government BMI standards) and he or she has low/normal/high blood pressure.

Hint: all conversion formulas, BMI standards, and what is considered hi/normal/low BP's can be found online. The output should address the user by using Mr or Mrs and he or she.

Bluefield has decided to use an ABC costing system and has identified the following detailed information about its cost pools and cost drivers: Activity cost pools Materials handling $56,000 Machine maintenance $17,640 Cost drivers Number of material moves 500 Number of machine hours 42,000 Required: 1. Calculate Bluefield’s activity rate for each cost pool. 2. Determine the amount of overhead assigned to Bluefield’s products if each has the following activity demands: Product A Product B Number of material moves 290 210 Number of machine hours 17,200 24,800

• 1
• Required 2

Calculate Bluefield’s activity rate for each cost pool. (Round your final answer for per material moves to nearest dollar amount and per machine hour to 4 decimal places.)

Determine the amount of overhead assigned to Bluefield’s products if each has the following activity demands: (Round intermediate calculations to 4 decimal places and your final answers to 2 decimal places.)

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3.

Gable Company uses three activity cost pools. Each pool has a cost driver. Information for Gable Company follows:

Required:

1. Compute the activity rate for each activity.

2. Classify each activity as facility, product, batch, or unit level.

• d 1
• Required 2

Compute the activity rate for each activity. (Round your answers to 2 decimal places.)

Classify each activity as facility, product, batch, or unit level.

Define the equivalence point of an acid-base titration. Describe it for a weak acid-strong base titration (will the pH be >,<, or = 7).

What is meant by a ‘continuum of violence’ in feminist terms and what implications does this have for the study of war?

Two masses are connected by a light string passing over a light, frictionless pulley as in Figure P5.63. The m1 = 5.30 kg object is released from rest at a point 4.00 m above the floor, where the m2 = 3.35 kg object rests.