Answer choices A and B are summary statistics. Answer choices C through K are inference techniques. Each answer choice is to be used only once.

Summary Statistics: A. Mean B. Five-number summary

Inference Techniques: C. 1-sample mean t-test D. Matched pairs E. 2-sample comparison of means F. One-way ANOVA G. Two-way ANOVA H. Simple linear regression I. Multiple regression J. 1-sample proportion test K. Chi-square test

_____ Part One. In the population, is there an association between the brand of the car owned by a person and the type of job that person has?

_____ Part Two. Is there evidence that the average height of men in the US has increased from 70 inches over the past ten years?

_____ Part Three. Is there evidence that the mean age of vegetarians is greater than the mean age of non-vegetarians in the US?

_____ Part Four. Is there evidence that the mean of the differences between the weight of a person, before and after following a low carb diet for three months, is greater than five pounds?

_____ Part Five. What is the interquartile range for the grades obtained by students in Stat 301 last semester? All grades are available for analysis.

_____ Part Six. Do the university, the school (liberal arts, science, engineering, technology, etc.) and the interaction between those two factors influence the salary of college professors?

_____ Part Seven. Is there evidence that the mean price of California oranges is not the same in Indiana, Illinois and Ohio?

_____ Part Eight. Is there evidence that the percentage of vegetarians in the US is less than 5%?

_____ Part Nine. In the population, can the long jump distance of a ten-year-old be predicted based on his/her height?

_____ Part Ten. What is the mean number of pets of the twenty neighbors of Russell street? Data is collected from all the twenty neighbors in that street.

_____ Part Eleven. Can the weight of a person be predicted based on time dedicated to exercise daily, their age and the amount of milk he/she consumes daily?

(Python) In a weather station, there is a sensor that measures the temperature three times a
day (in Celsius). Write a program that asks the user to input three numbers, corresponding to the
sensor's three readings for a particular day. Then, print the minimum, maximum and average value
of the three numbers.
Note: If one or two inputs are either less than -70, or greater than +50 degrees, you should ignore
those one or two inputs, and calculate the minimum, maximum and average using only the other
inputs. If all 3 inputs are either less than -70 or greater than 50, your code should print "Broken
sensor!" and not perform any calculations.
For this question, you must not use any built-in functions or functions from math
module except print(), input() or oat(). You must compute the minimum, maximum
and average values using if statement and arithmetic operators. This means that you
cannot use the built-in max() or min() functions.

Iconic memory is a type of memory that holds visual information for about half a second (0.5 seconds). To demonstrate this type of memory, participants were shown three rows of four letters for 50 milliseconds. They were then asked to recall as many letters as possible, with a 0-, 0.5-, or 1.0-second delay before responding. Researchers hypothesized that longer delays would result in poorer recall. The number of letters correctly recalled is given in the table.

(a) Complete the F-table. (Round your values for MS and F to two decimal places.)

(b) Compute Tukey's HSD post hoc test and interpret the results. (Assume alpha equal to 0.05. Round your answer to two decimal places.)

The critical value is  for each pairwise comparison.

Which of the comparisons had significant differences? (Select all that apply.)

The null hypothesis of no difference should be retained because none of the pairwise comparisons demonstrate a significant difference.Recall following no delay was significantly different from recall following a one second delay.Recall following a half second delay was significantly different from recall following a one second delay.Recall following no delay was significantly different from recall following a half second delay.

A state government has an affiliated day-care center for kids. The center provides three different programs for infants, toddlers, and preschool kids. Tuition is charged weekly. The center runs at full capacity, which is 30 infants, 30 toddlers and 40 preschool kids. The center pays a monthly rent of $4,000 for the building they use. The center hires an executive director, a coordinator, an accountant, and a staff member working with maintenance and cleaning. Their annual salaries are $60,000, $50,000, $40,000, and $35,000. State laws require that student-to-teacher ratio should be 5:1 for infants, 6:1 for toddlers, and 10:1 for preschool kids. Each teacher gets an annual salary of $50,000. The expenses for daily activities per kid per day for the three programs are $10 (infant), $12 (toddler), and $15 (preschool kids). Electricity, depreciations, and other expenses run up to around $2,000 in total per month.

(1) Identify all the items of fixed costs and variable costs. (Assuming the size of program for infants, toddlers and preschool kids are fixed at 30, 30 and 40)

(2) The center decides to charge the same weekly tuition for each kid in all the three programs (infants, toddlers, and preschool kids). Calculate the break-even price per kid per week.

(3) If state employees get a 10% discount on the tuition, and the center estimates that 90% of the kids come from families of state employees, what is the full tuition price per week at break-even? (Hint: calculate the weighted break-even price for both state employees and non-state employees).

21. The inflation rate between the years 2000 and 2001 was 3.43%. Based on this information, a basket of goods that cost $178 in the year 2000 would now cost how much in the year 2001? Enter a number rounded to two decimal places.

22.

Three goods are produced and consumed in an economy during years 1 and 2. The table shows prices (P1 and P2) for each good and the quantities produced (Q1 and Q2) for each good. The base year is year 1.

Enter numbers rounded to two decimal places in each blank.

Real GDP in year 1 is $  .

Real GDP in year 2 is $  .

Assume a program requires the execution of 50 × 10⁶ FP instructions, 110 × 10⁶ INT instructions, 80 × 10⁶ L/S instructions, and 16 × 10⁶ branch instructions. The CPI for each type of instruction is 1, 1, 4, and 2, respectively. Assume that the processor has a 2 GHz clock rate.

a. Find the execution time?

b. By how much must we improve the CPI of FP instructions if we want the program to run two times faster?

c. By how much must we improve the CPI of L/S instructions if we want the program to run two times faster?

d. By how much is the execution time of the program improved if the CPI of INT and FP instructions is reduced by 40% and the CPI of L/S and Branch is reduced by 30%?

A firm uses activity-based costing and has the following activity rates: $100 per machine hours, $500 per batch start, $5 per order.

The firm has two several products, including the following two.

Product 1: $100,000 revenue, $50,000 direct costs, 250 machine hours, 25 batch starts, 500 orders

Product 2: $95,000 revenue, $40,000 direct costs, 40 machine hours, 16 batch starts, 400 orders

Which of the following process improvements is the MOST profitable?

Recall again that Rind & Bordia (1996) investigated whether or not drawing a happy face
on customers’ checks increased the amount of tips received by a waitress at an upscale
restaurant on a university campus. During the lunch hour a waitress drew a happy,
smiling face on the checks of a random half of her customers. The remaining half of the
customers received a check with no drawing (18 points).
The tip percentages for the control group (no happy face) are as follows:
45% 39% 36% 34% 34% 33% 31% 31% 30% 30% 28%
28% 28% 27% 27% 25% 23% 22% 21% 21% 20% 18%
8%
The tip percentages for the experimental group (happy face) are as follows:
72% 65% 47% 44% 41% 40% 34% 33% 33% 30% 29%
28% 27% 27% 25% 24% 24% 23% 22% 21% 21% 17%

This time, you are to perform a “hypothesis test” using the tip data, answering each of
the questions below. For short-answer questions, be brief. However, you must give
enough detail to justify your answers. Single-sentence responses will generally not
suffice, but do not exceed a paragraph for any given answer.

h. Enter the data above into SPSS. You will enter in two variables for each
restaurant patron: 1) which experimental group they belonged to (1 = no
happy face, 2 = happy face) and 2) the tip percentage left.

A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population. She randomly assigns nold = 8 to the old diet and nnew = 5 to a new diet including the additive. The cows are housed in 13 widely separated pens. After two weeks, she milks each cow and records the milk produced in pounds: Old Diet: 43, 51, 44, 47, 38, 46, 40, 35 New Diet: 47, 75, 85, 100, 58 Let μnew and μold be the population mean milk productions for the new and old diets, respectively. She wishes to test H0 : μnew − μold = 0 against HA : μnew − μold ̸= 0 using α = 0.05.(a) Graph the data as you see fit. Why did you choose the graph(s) that you did and what does it (do they) tell you?(b) Perform the hypothesis test assuming equal population variance. Compute the p-value and make a reject or not reject decision. State your conclusion in the context of the problem. (c) Repeat the previous part, but without the equal variance assumption. (d) Compare the results from part b and c. Which test do you trust more and why? I have answers for (a) and (b) with p-value 0.035 which rejects null hypothesis. Can you help with (c) and (d)? Thank you!

Dodge Ball Bearings had sales of 14,000 units at $40 per unit last year. The marketing manager projects a 25 percent increase in unit volume sales this year with a 5 percent price decrease (due to a price reduction by a competitor). Returned merchandise will represent 7 percent of total sales. What is your net dollar sales projection for this year?