A current UC Santa Cruz graduate student who earned their biology degree at SFSU is doing research to replicate classic experiments that investigated the inheritance patterns of traits in the sweet pea plant. In one experiment, they mated a plant with wrinkled seeds (plant A) to a plant with smooth seeds (plant B). Of the resulting 100 offspring plants, they noted that 48 had wrinkled seeds and 52 had smooth seeds. Answer the questions below and make sure you fully explain your logic.

PART 1 (3 points):

Based on the results of the experiment above, can you conclude that the wrinkled phenotype is recessive to the smooth phenotype? Why or why not?

PART 2 (3 points):

In a subsequent experiment, they crossed two of the smooth pea plants that resulted from the original cross. Of the 100 offspring, 24 plants had wrinkled seeds and 76 had smooth seeds. Can you conclude from this which of the two phenotypes is dominant? Explain your reasoning.

PART 3 (3 points):

Based on the results of both crosses (in PART1 and PART2), what were the genotypes of the original two plants (plant A and plant B)? How did you figure this out?

In Arizona, all students in elementary and secondary schools have to take AIMS tests (which was largely replaced by AZmerit tests recently) as the state-mandated standardized assessment of math and English proficiency. A teacher wonders if high school dropout rate would be correlated with AIMS test results in a particular county. To explore this question, she collected the dropout rates and the AIMS Math pass rates (taken in 2012) at the county level for cohort 2014 from all counties in Arizona, as listed in the table below.

Calculate the Z scores for all the scores of AIMS English pass rate and high school dropout rate, separately. (please show work for a few so I understand how to do it)

Explain the direction and strength of the relationship based on the r.

R problem

1. Student records. Create an S3 class studentRecord for objects that are a list with the named elements ‘name’, ‘subjects completed’, ‘grades’, and ‘credit’. Write a studentRecord method for the generic function mean, which returns a weighted GPA, with subjects weighted by credit. Also write a studentRecord method for print, which employs some nice formatting, perhaps arranging subjects by year code.

Finally create a further class for a cohort of students, and write methods for mean and print which, when applied to a cohort, apply mean or print to each student in the cohort.

In the Introductory Survey we asked if you had paid employment while studying at university. We also asked this question in the equivalent survey for Semester 2 2018. A summary of the results for this question from both surveys is shown in the table below. ‘Working’ denotes students who said that they had some kind of paid employment while studying, ‘Total’ denotes the total number of students who responded to these questions in the surveys. 2019 Semester 1 Working 355 Total 627 2018 Semester 2 250 510 STAT101 includes a very wide range of students. For this question we will assume that these samples can be regarded as random samples from the total populations of first year UC students in Semester 1 2019 and Semester 2 2018, respectively. a) Use the data to construct a 90% confidence interval for the population proportion of first year UC students who were working while studying at the start of Semester 1 2019. b) Use the data to construct a 90% confidence interval for the population proportion of first year UC students who were working while studying at the start Semester 2 2018. c) Use your confidence intervals to comment on the suggestion that the proportion of first year UC students who were working while studying was higher at the start of Semester 1 2019 than at the start of Semester 2 2018. Give your response in one or two brief sentences.

Hypothesis Test: Proportion

The university lecturer also wants to ensure that not too many people fail their course (obtain a mark less than 45). They decide to test if the proportion failing their course in the new cohort is the same as in the previous cohort. In the previous cohort 6 out of 100 students failed. In the new cohort 0.269 proportion of 130 students failed.

Test your hypothesis at the 95% level, what is your p-value?

Without conducting further calculations, would a 95% confidence interval give the same conclusion? State your reasoning

The number of students in the MPH program by county is given below. If a student is selected at random from this dataset, find the probability that:

MPH program (Show your work)

1. The student is from Escambia county
2. The student is from Santa Rosa county
3. The student is from either Escambia or Santa Rosa county
4. The student is not from Santa Rosa county

(Show your work)

Total fertility rate (TFR)- formula, interpretation, advantages, disadvantages- period v. cohort Unmet need for family planning

What actions by Santa Anna caused Texas to declare independence?

How did the leaders of San Antonio (Bexareños) respond to the actions of Santa Anna and of the leaders of Saltillo?

What was the Navarro family position concerning Federalist v. Centralist? (Jose Antonio Navarro)

Explain the role Jose Antonio Navarro played in Texas' independence.

1.

1. We have a hollow metallic sphere with charge -5.0 uC and radius 5.0 cm. We insert a +10uC charge at the center of the sphere through a hole in the surface. What charge now rests on the outer surface of the sphere?

   		+5 uC
   		+10 uC
   		+15 uC
   		-5 uC

2. A free electron is in an electric field. With respect to the field, it experiences a force acting:

   		Parallel
   		Anti-parallel
   		Perpendicular
   		Along a constant potential line

3. A parallel plate capacitor has a capacitance of 20 uF. What charge on each plate will produce a potential difference of 36 V between the plates of the capacitor?

   		7.2 x 10-4 C
   		3.6 x 10-4 C
   		1.8 x 10-4 C
   		0.9 x 10-4 C

4. What is the intensity of sound from a band with a sound level of 120 dB? (I_o = 10^-12 W/m²)

   		1 W/m2
   		1.2 W/m2
   		10 W/m2
   		12 W/m2

5. Replacing a wire resistor with another of the same material and length but with three times the diameter will have the effect of changing the resistance by what factor?

   		0.33
   		1/9
   		3
   		9