Does it take a different amount of time for seeds to germinate if they are near rock music that is continuously playing compared to being near classical music? The 53 seeds that were exposed to rock music took an average of 28 days to germinate. The standard deviation was 11 days. The 40 seeds that were exposed to classical music took an average of 32 days to germinate. The standard deviation for these seeds was 11 days. What can be concluded at the αα = 0.05 level of significance?
H0:H0: Select an answer p1 μ1 ? < = ≠ > Select an answer μ2 p2 (please enter a decimal)
H1:H1: Select an answer p1 μ1 ? ≠ < = > Select an answer p2 μ2 (Please enter a decimal)
In: Statistics and Probability
The enhancers that are present near a gene are present in every cell in an organism, yet these enhancers can have tissue-specific effects on gene expression. Explain how enhancers could have tissue-specific effects on gene expression.
In: Biology
The new Fore and Aft Marina is to be located on the Ohio River near Madison, Indiana. Assume that Fore and Aft decides to build a docking facility where one boat at a time can stop for gas and servicing. Assume that arrivals follow a Poisson probability distribution, with an arrival rate of 8 boats per hour, and that service times follow an exponential probability distribution, with a service rate of 10 boats per hour. The manager of the Fore and Aft Marina wants to investigate the possibility of enlarging the docking facility so that two boats can stop for gas and servicing simultaneously.
A. What is the probability that the boat dock will be idle? Round your answer to four decimal places.
P0=
B. What is the average number of boats that will be waiting for service? Round your answer to four decimal places.
Lq=
C. What is the average time a boat will spend waiting for service? Round your answer to four decimal places.
Wq=
D. What is the average time a boat will spend at the dock? Round your answer to four decimal places.
W=
E. If you were the manager of Fore and Aft Marina, would you be satisfied with the service level your system will be providing? Round your answers to whole numbers.
Because the average wait time is ____ seconds. Each channel is idle ____ % of the time.
In: Statistics and Probability
In a surface condenser a section of the tubes near to
the air pump suction is
screened off so that the air is cooled to a temperature below that
of the condensate, separate extraction
pumps being provided to deal with air and condensate respectively.
5448 kg of steam are condensed
per hour and the air leakage is 4.54 kg/h. The temperature of the
exhaust steam is 31°C, the temperature
of the condensate is 27°C, and the temperature at the air pump
suction is 21.1°C. Assuming a constant
vacuum throughout the condenser, find
() The mass of steam condensed per hour in the air cooler;
(i) The volume of air in m3/h to be dealt with by the air
pump;
(ii) The percentage reduction in necessary air pump capacity
following the cooling of the air..
In: Mechanical Engineering
A firm that is looking to raise capital in the near future. To prepare for potential investors, you determined that you need the WACC of your firm. Your firm is currently structured in such a way that the debt-to-equity ratio is 0.4.
1. Since the company size is comparable with publicly traded micro-cap companies, you started analyzing the Wilshire Micro-Cap ETF, which represents a basket of micro-cap US companies. The current price of this EFT is $29.97. At inception 6.25 years ago it traded at $15.45. In a comparable period, the 3-month T-Bills, which you consider risk free, returned 0.35% annually.
a.) What was the annualized return for the
reference micro-cap ETF?
b.) During the period considered, what was the risk
premium of micro-cap stocks?
c.) Historically your company has produced equity
returns that indicate a beta to the general micro-cap market of
around 1.25. Assuming this number will remain stable, what should
your cost of equity be?
2. Your only debt outstanding in the market is a single bond with the following parameters:
10 yrs until maturity
semiannual coupons with an (annual) coupon rate
of 7%
current market price of 95 (as a percentage of
the notional amount)
What is your cost of debt?
3. Given the results from 1 and 2, what is your firm's WACC?
Please provide steps and formulas.
In: Finance
In: Physics
At the equator, near the surface of the Earth, the magnetic field is approximately 50 ?? northward, and the electric field is about 100 N/C downward in fair weather. Find the magnitude and direction of gravitational, electric, and magnetic forces on an proton in this environment, assuming the proton has an instantaneous velocity of 5?106m/s directed to the west.
In: Physics
Derive the equations for a particle moving near the surface of the earth, given by
?̈= 2? cos ? ?̇
?̈= −2( cos ? ?̇ + ? sin ? ?̇)
?̈= −? + 2? sin ? ?̇
? = v/r; v=velocity; r-radius
where the earth’s rotational speed in the ?̂ direction is ?.
In: Physics
MARKETING!
Google is developing a self-driving car that will be in the marketplace in the near future. Identify a potential market segment and describe the value proposition that would meet the needs of this target customer group. What need is being fulfilled? What benefits are being sought?
In: Operations Management
A small village is located near a stream which is to be used as the source of water supply for
the community. The minimum flow in the stream is 550 m3/h. The population analysis
reveals that the population is expected to increase linearly from a population of 10,000 in
2008 to 30,000 in 2058.
The water consumption of the community is estimated to reach an annual average demand
of 300 L/capita/day, a maximum daily demand of 1.8 times the annual average and peak
hourly demand of 1.5 times the daily average.
Would you be able to supply these demands directly from the stream? If not, what would
you recommend?
a) In the year 2030
b) In the year 2058
In: Civil Engineering