A corporate fleet of 30 automobiles costs $900,000. After five years each automobile can be salvaged for $10,000 each. Each car will be used for 12,000 miles per year. With a MARR of 14%, what is the equivalent annual cost per mile?

Rob Roy is toying with the idea of buying a used car every three years instead of leasing or buying a new one. Assuming he can find a one-owner with low miles in good condition, what advantages might he enjoy?

Hybrid cars are touted as a "green" alternative; however, the financial aspects of hybrid ownership are not as clear. Consider the 2018 Edsel 550h, which had a list price of $5,400 (including tax consequences) more than the comparable Edsel 550. Additionally, the annual ownership costs (other than fuel) for the hybrid were expected to be $460 more than the traditional sedan. The EPA mileage estimate was 25 mpg for the hybrid and 17 mpg for the traditional sedan.

1. A trainer is studying the effects of vitamin D on his athletes. He has realized that there are many potential confounding factors, such as gender and age. To limit the effect of these confounding variables, he decided to first group two athletes together based on these variables (for example, two 21-year-old males). Then he randomly assigned one person to receive the vitamin D and the other to receive a sugar pill.

What type of experimental design does this situation demonstrate?

• Matched-Pair Design

• Randomized Block Design

• Completely Randomized Design

• Simple Random Design

2. Jay wants to study nutrition and performance in schools using available data.

Which of the scenarios below will provide Jay with available data?

• Going to a local high school and asking the principal for information about students' previous grades, then interviewing a random selection of students about their eating habits.

• Going to a local high school and asking the principal for information about students' current and previous grades, then asking the health teacher for the results from a survey students took in health class.

• Going to a local high school and asking the principal for information about students' current and previous grades, then interviewing a random selection of students about their eating habits.

• Going to a local college and asking current undergraduates to report their grades and eating habits from high school.

3. Dave drives to work. While driving the car over nine days, he observes his daily average speed and lists it in the table below.

The median speed at which Dave drove to work was __________.

• 59 miles per hour

• 63 miles per hour

• 58.89 miles per hour

• 62 miles per hour

If x is a binomial random​ variable, use the binomial probability table to find the probabilities below.

a. P(x<6) for n = 15, p=0.2

b. P(x>=14) for n=20, p=0.8

c. P(x=23) for n=25, p=0.1

there is a sinusoidal message signal (f = 100 Hz).

Make amplitude modulation with carrier frequency of 10KHz. Use three different modulation depths / indices (0.2 /0.60/0.8).

Then demodulate this mixed signal (for these three cases) by try to get message signals. (need matlab codes and graphs)

Information

The next three questions (7 to 9) refer to the following:

We would like to determine how the weight of a car can be used to predict its fuel efficiency. The weight (in pounds) and the fuel efficiency (in miles per gallon) are recorded for a sample of ten cars. The least squares regression line is calculated to be ŷ =51.47−0.0089x{"version":"1.1","math":"\hat{y} = 51.47 - 0.0089x"}. It is also determined that 58.5% of the variation in a car's fuel efficiency can be accounted for by its regression on the car's weight.

Question 7 (1 point)

Question 7 options:

The value of the correlation between weight and fuel efficiency for this sample of cars is:

(Round your answer to 2 decimal places. Ignore the spell check icon.)

Question 8 (1 point)

Which of the following is the correct interpretation of the slope of the least-squares regression line?

Question 8 options:

Question 9 (1 point)

One car in the sample weighs 4,000 pounds and has a fuel efficiency of 20 miles per gallon. What is the value of the residual for this car?

Report your answer to 2 decimal places.

Your Answer:

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Scores of a Canadian judge (X) and an American judge (Y) are recorded at an international gymnastics competition for a sample of gymnasts. The correlation between X and Y is calculated to be r = 0.9. What is the correct interpretation of this correlation?Question 10 (1 point)

Question 10 options:

Please explain how to do 1a and b throughly, thank you!

1A) A psychologist specializing in marriage counseling claims that, among all married couples, the proportion p for whom her communication program can prevent divorce is at least 76%. In a random sample of 225 married couples who completed her program, 164 of them stayed together. Based on this sample, can we reject the psychologist's claim at the 0.01 level of significance?Perform a one-tailed test. Then fill in the table below.

Carry your intermediate computations to at least three decimal places and round your answers as specified in the table.

1B) Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1600 miles per month. Recently, though, Citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. To test this, a random sample of 12 recent mileages of Citrus cars was taken. The mean of these 12 mileages was 1565 miles per month, and the standard deviation was 210 miles per month. Assume that the population of recent monthly mileages of Citrus cars is normally distributed. At the 0.1 level of significance, can it be concluded that the mean recent monthly mileage, μ, of Citrus cars is less than 1600 miles per month?

Perform a one-tailed test. Then fill in the table below.

Carry your intermediate computations to at least three decimal places and round your answers as specified in the table.

1. Develop a module named temperatures.py with the following functions.

• Function toCelsius is passed a Fahrenheit temperature and returns the Celsius equivalent. 1 degree Fahrenheit = 5/9 * (Fahreheit-32) degrees Celsius.
• Function toFahrenheit is passed a Celsius temperature and returns the Fahrenheit equivalent. 1 degree Celsius = 1.8*Celsisus + 32 degrees Fahrenheit.
• Function toKPH is passed a speed in miles per hour and returns the kilometers per hour equivalent. 1 kph = mph * 1.609344
• Function toMPH is passed a speed in kilometers per hour and returns the miles per hour equivalent. 1 mph = kph * 0.62137119
• Function windchillF is passed the temperature in Fahrenheit (T) and the wind speed in miles per hour (V) and returns the wind chill in Fahrenheit.

WC = 35.74+ 0.6215T−35.75V^0.16 +0.4275∗T∗V^0.16

• Function windchillC is passed the temperature in Celsius (T) and the wind speed in kilometers per hour (V) and returns the wind chill in Celsius.

WC = 13.12+ 0.6215T−11.37V^0.16 +0.3965∗T∗V^0.16

2. Develop an application in which the user enters lower and upper bounds on temperature in Fahrenheit and lower and upper bounds on wind speed in miles per hour. Two charts are produced. The first chart lists wind chills in Fahrenheit for all combinations of temperature in Fahrenheit and wind speed in miles per hour. The second chart lists wind chills in Celsius for all combinations of equivalent temperatures in Celsius and wind speeds in kilometers per hour.

Required Code Structures:

• The main function should be listed in def main ( ) function. The main function gets data from the user and calls the display function twice, once to produce the first chart in Fahrenheit and again to produce the second chart in Celsius.

• A display function is written which is passed code ("F" for Fahrenheit or "C" for Celsius) along with the low and high bounds for temperature in correct units and low and high bounds for wind speed in correct units. This code uses a nested for loop to display a neat chart with field widths (see sample output for design to match). The temperatures increase by 5 each pass and the wind speeds increase by 2. Hint: Use the int function as necessary to convert float values to int values in the for loops.

• Add your name and a program description as comments at the top of code.
• All variables must have meaningful names using convention of lower case and a comment.
• All constants must have meaningful names using convention of upper case and a comment.
• All functions must have a comment describing purpose or return value

In a specific population of​ people, cancer is found in 0.8​% of the people. If a person does have the​ disease, a diagnostic procedure will identify the presence of cancer in 93​% of such people. If a person does not have​ cancer, this diagnostic procedure will give a​ false-positive result 0.3% of time. What is the probability that a person with a positive test result has cancer.