munative EXdlnActiveTIME REMAININ1902:41:17Which component is missing from the researcher'sprocess?A researcher is comparing three new formulas for grasskiller. To conduct the experiment, the researcherpurchases 30 pieces of sod from various vendors to usein the study. To create the three treatment groups, theresearcher numbers the pieces of sod 1-30 and placesthe numbers in a hat. The researcher randomly selectsO The researcher did not use randomization whenassigning the groups.O The researcher should not have purchased sod fromdifferent vendors.10 numbers, making sure to mix the numbers betweeneach selection, and then repeats that process one moretime to select the pieces of sod in the experiment.O The researcher did not assign the chosen pieces ofsod to treatment groups.O The researcher should have randomly selected 10numbers a total of three times.SubritNextSave and ExitMark this and return

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Answered: Which component is missing from the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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This is part of a practice test, want to see if I am doing it right
A group of 11 students was selected at random and asked for their high school GPA and their freshmen GPA in college the subsequent year. The results were: Student High School GPA Freshmen GPA 1 2.0 1.6 2 2.2 2.0 3 2.6 1.8 4 2.7 2.8 5 2.8 2.1 6 3.1 2.0 7 2.9 2.6 8 3.2 2.2 9 3.3 2.6 10 3.6 3.0 We would like to know whether there is a linear relationship between the high school GPA and the college freshmen GPA, and we would like to be able to predict the freshmen GPA, if we know that the high school GPA of another student is, say, 3.4. Provide the two requested scatter plots for this data (put college freshman GPA on the Y (vertical) axis!). a) What would be your approximate 95% prediction interval for question (g)? b) Show your scatterplot with the predicted trend line below
A sack contains 30 red balls, 20 green balls, 10 blue balls and 5 yellow balls. If we mix them thoroughly and draw 2 balls at random with replacement, what is the chance that the first ball drawn is red and the second ball drawn is green? Choose the answer that is closest. -14.2% -16.8% -28.5% -27.1%
An experiment is performed where a 3-color spinner is spun and then a 4-sided die is rolled. The possible outcomes for each event are red (R), blue (B), and yellow (Y) for the 3-color spinner and 1, 2, 3, and 4 for the 4-sided die. Identify the sample space for this experiment.
A researcher recruits 20 female dogs and 20 male dogs (as well as their owners) at the local dog park. She takes a poll to find out who has passed and who has failed the puppy pre-school final exam. She learns that 14 female dogs have passed, and only 11 male dogs have passed. Which statistical test does she need to conduct to determine if female dogs are actually more likely than male dogs to pass the puppy pre-school final exam? Two-way factorial ANOVA Chi-square test of independence Point-biserial correlation Goodness-of-fit chi-square test
K In a large clinical trial, 395,956 children were randomly assigned to two groups. The treatment group consisted of 198,649 children given a vaccine for a certain disease, and 27 of those children developed the disease. The other 197,307 children were given a placebo, and 107 of those children developed the disease. Consider the vaccine treatment group to be the first sample. Identify the values of n₁. P₁, 9₁. n2. P2, 92, P. and q. n₁ 11
A study examines whether alcohol affects driving ability. twelve prople play a driving sim game. then the same 12 people are given enough alcohol to exceed the legal likit and play the game again. the researchers compares how many accidents ppl had while sober and after drinking What test would you use and why? (z test, independent t test, single sample t test, paired samples)
A stock price is currently $40. It is known that at the end of 1 year it will be either $48or $32. The risk-free Interest rate is 5% per annum with continuous compounding. What is the value of a portfolio today with a strike price of $527 (use A-0.25) Hint: draw a tree
Kamila wrote each day of the week on a piece of paper and placed them in a hat. She was hoping Pedro would pick out Friday. He tried three times and got Monday, Saturday, and Thursday. What is the sample space for Kamila’s chance experiment?

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