You are studying three linked genes in snapdragons. The flower color locus is in the center. There are 11.3 cM between the flower color locus and the plant height locus. There are 10.7 cM between the flower color locus and the leaf type locus. The coefficient of coincidence is 0.8. Pure-breeding tall, red-flowered plants with fuzzy leaves were crossed to pure-breeding dwarf, blue-flowered plants with smooth leaves. The F1 were testcrossed. Calculate the proportion of the testcross progeny that are expected to be dwarf with blue flowers. Round properly to 4 decimal digits.
In: Biology
Prior to eating breakfast, 25 participants were randomly assigned to eat a large meal, 25 to eat a small meal, and 25 to eat nothing. Immediately following the meal, all participants took a memory test. The means and estimated population variances for the three groups on the memory test were: Large: M = 2.1, S2 = 1.0; Small: M = 2.5, S2 = 1.2; Nothing: M = 2.9, S2 = 0.8. Using the .05 significance level, does amount of breakfast eaten affect memory? Perform a complete hypothesis test.
In: Statistics and Probability
Colt Manufacturing has two divisions: 1) pistols; and 2) rifles. Betas for the two divisions have been determined to the beta (pistol)= 0.8 and beta (rifle)= 1.2. The current risk-rate of return is 1.5%, and the expected market rate of return is 7.5%. The after-tax cost of debt for Colt is 5%. The pistol division's financial proportions are 32.5% debt and 67.5% equity, and the rifle division's are 42.5% debt and 57.5% equity.
a. What is the pistol's division's WACC?
b. What is the rifle division's WACC?
Round to two decimal places.
In: Finance
μ = the population mean speed (mph) of trucks in a specific region in Greeley, CO. A random sample of 8 trucks has a sample mean speed of 25.4 mph and the population standard deviation is known to be 3.2 mph. Find the 95% confidence interval for μ.
a.) (23.18, 27.62)
b.) (12.68, 18.70)
c.) (24.08, 30.05)
d.) (18.80, 24.56)
What is the required sample size if you want an error margin for the 95% confidence interval for μ to equal 0.8 mph?
a.) 62
b.) 60
c.) 58
d.) 64
In: Statistics and Probability
4.07. A taxi company manager is trying to decide whether the use of radial tires instead of regular belted tires improves fuel economy. Randomly selected 12 cars with radial tires yielded in a sample mean of 5.7 and sample standard deviation of 0.4, another randomly selected 15 cars with belted tires yielded a sample mean of 5.2 and a standard deviation of 0.8. Assume the populations to be approximately normal with equal variances.
State and conclude your hypothesis at the 0.05 level of significance based on manager’s claim?
Find P-Value.
In: Statistics and Probability
Find the effective annual rate of the following credit terms:
a.2.3% discount if paid within 88 days or net within 30 days
b.1.1% discount if paid within 35 days or net within 60 days
c.0.4% discount if paid within 14 days or net within 45 days
d.0.8% discount if paid within 23 days or net within 30 days
What is the effective annual rate of a 2.3% discount if paid within 88 days or net within 30 days?
In: Finance
23 hp, dc shunt motor is running at 1000 rpm when the armature voltage is 600 V. The armature resistance of the motor is 0.8 ohm, and the field resistance is 900 ohm. The efficiency of the motor at full load is 92 %.
a) Calculate the value of the resistance of the dynamic braking at full load. The armature current should be limited to 150% of the rated value.
b) If the motor operated in regenerative braking at a speed of 1100 rpm, calculate the line current.
c) Design a circuit for countercurrent braking (by reversing supply voltage) so that the line current will not exceed 120% of the rated value.
In: Electrical Engineering
Water in pipe AB (Figure 2), diameter (DAB) 1.2 m, is
flowing with the velocity (VAB) of 3 m/second. Then it continues to
flow through pipe BC, with a diameter (DBC) of 1.5 m and finally
flows through branch pipe of CD, diameter (DCD) of 0.8 m and pipe
of CE (DCE), with a velocity (VCE) of 2.1 m/second.
Calculate:
1. Discharge of pipe AB (QAB)
2. Flow velocity of pipe BC (VBC)
3. Flow velocity of pipe BC (VBC)
4. Diameter of pipe CE (VCE)
In: Civil Engineering
In: Electrical Engineering
Consider a Si p-n junction at T=300K with the following parameters: Na=5x1017cm-3, Nd=5x1017cm-3 Dn=25 cm2 /s D P=10 cm2 /s τn=5x10-7 s τP=5x10-7 s. Let the photocurrent density be 20 mA/cm2 . (a) Calculate the maximum power delivered to the load assuming that the fill factor is 0.8. (b) By what factor will the output power increase from (a) if the solar intensity is increase by a factor of 10 due to light concentration. Comment on your results
In: Electrical Engineering