Question Which of the following is TRUE about block design? I. The purpose of blocking is to decrease variation in results. II. Matched pairs design is a type of block design. III. The random assignment of units to treatments in a block design is accomplished separately in each block. I, II, and III I and II only II and III only

Question 3 (2 points) A sample of size 15 drawn from a normally distributed population has sample mean 35 and sample standard deviation 14. Construct a 95% confidence interval for the population mean and interpret its meaning

How can i get Xt and X in thesecond picture??please explain me A slab with a wet weight of 5 kg originally contains 50 percent moisture (wet basis). The slab is 600 by 900 by 75 mm thick. The equilibrium moisture content is 5 percent of the total weight when in contact with air of 20°C and 20 percent humidity. The drying rate is given in Table 24.1 for contact with air of the above quality at a definite velocity. Drying is from one face. How long will it take to dry the slab to 15 percent moisture content (wet basis)? TABLE 24.1 Wet-slab weight, kg Drying rate, kg/m².h 9.1 4.9 7.2 4.9 5.3 4.4 4.2 3.9 3.3 3.4 2.9 2.0 2.7 1.0 Chapter 24, Problem 3P 5 Bookma In the falling rate period: Wet-slab Weight R Kg Kg/m²-h X, X 1/R 5.3 4.4 1.120 1.067 0.227 4.2 3.9 0.680 0.627 0.256 3.3 3.4 0.320 0.267 0.294 2.9 2.0 0.160 0.107 0.500 2.7 1.0 0.080 0.0271.000

00000000004004ed <foo>: 4004ed: mov $0x0,%eax 4004f2: jmp 4004f9 <foo+0xc> 4004f4: add %edi,%eax 4004f6: sub $0x1,%edi 4004f9: cmp %esi,%edi 4004fb: jg 4004f4 <foo+0x7> 4004fd: repz retq Based on the assembly code above, fill in the input boxes at the bottom with your answer to each blank in the corresponding C source code below. (Note: the number in parentheses before each blank is its corresponding input box number; you may only use the symbolic variables x, y, i, and result in your expressions below — do not use register names.) int foo(int x, int y) { int i; int result=__________; for (i=__________; __________; __________) { result=__________; } return result; }

Assume that in a particular market (let's say widgets), demand is perfectly inelastic (or vertical) and supply is positively sloped. If the government imposes a tax of $1 per widget in this market: the tax burden falls most heavily on producers. the tax burden will fall entirely on consumers. equilibrium quantity must decrease since people will buy less widgets. equilibrium price will decrease since people will buy less widgets. the tax burden must be equally shared by consumers and producers.

You are a proctor for a Data Science exam, and just gave a test to 15 students. You want to get an idea for the true standard deviation of the scores, using the scores you just recieved. Assume that the underlying score population is normally distributed. scores = c(53.62, 69.2, 81.96, 40.62, 76.24, 99.78, 94.49, 71.6, 76.95, 37.68, 37.59, 59.22, 92.44, 81.22, 63.74) Part A) Using the data stored in the variable scores , calculate a 95% confidence interval for the standard deviation of the data. Your confidence interval should be two tailed, and cut off an equal proportion of area on each side. Save the lower value as p1.lower and the upper value as p1. upper . Round your answers to two decimal places. # your code here p1.upper = NA p1.lower = NA alpha = 0.05

It's Halloween, and Ralphie has 6 large bags, each filled with a combination of 4 different kinds of candy. Each bag should have an approximately equal amounts of each flavor. But, being a buffalo, Ralphie is not sure that she spread the candy out evenly. She has asked your help to determine whether the proportions of flavors within each bag is the same. Each bag contains hundreds of pieces of candy, so we can't count them all by hand. Instead, you take a sample of 50 pieces from each bag. The table below displays the counts of each type of candy within each sample of 50 pieces: Candy A Candy B Candy C Candy D Bag 1 14 18 11 6 Bag 2 10 20 12 9 Bag 3 13 14 15 8 Bag 4 15 15 10 10 Bag 5 11 17 13 9 Bag 6 11 14 14 11 Part B) Determine whether the proportions of candy are equal by solving for the p-value of the appropriate test. Save your answer as p2.b. Round your answer to three decimal places. # your code here p2.b = NA Part E) After some thinking, Ralphie has changed her mind and believes that the candies actually follow the below proportions: PA = 0.25 PB = 0.35 Pc = 0.25 PD = 0.25 At a significance level of a = 0.05, determine if your observed samples agree with Ralphie's newly proposed proportions. Save the p-value of your calculations as p2.e.pval. Round this answer to three decimal places. Into variable p2.e, save TRUE if your data does agree with the new proportions, or FALSE if it does not. # your code here p2.e = NA p2.e.pval = NA