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1. If you are told only that you scored in the 80th percentile, do you know from that description exactly how it was calculated? Explain.
Use the following information to answer the next three exercises: A Lake Tahoe Community College instructor is interested in the mean number of days Lake Tahoe Community College math students are absent from class during a quarter.2. What is the population she is interested in?a. all Lake Tahoe Community College studentsb. all Lake Tahoe Community College English studentsc. all Lake Tahoe Community College students in her classesd. all Lake Tahoe Community College math students
3. The instructor takes her sample by gathering data on five randomly selected students from each Lake Tahoe CommunityCollege math class. The type of sampling she used isa. cluster samplingb. stratified samplingc. simple random samplingd. convenience sampling This study investigated the cognitive effects of stimulant medication in children with mental retardation and Attention-Deficit/Hyperactivity Disorder. This case study shows the data for the Delay of Gratification (DOG) task. Children were given various dosages of a drug, methylphenidate (MPH) and then completed this task as part of a larger battery of tests. The order of doses was counterbalanced so that each dose appeared equally often in each position. For example, six children received the lowest dose first, six received it second, etc. The children were on each dose one week before testing. This task, adapted from the preschool delay task of the Gordon Diagnostic System (Gordon, 1983), measures the ability to suppress or delay impulsive behavioral responses. Children were told that a star would appear on the computer screen if they waited "long enough" to press a response key. If a child responded sooner in less than four seconds after their previous response, they did not earn a star, and the 4-second counter restarted. The DOG differentiates children with and without ADHD of normal intelligence (e.g., Mayes et al., 2001), and is sensitive to MPH treatment in these children (Hall & Kataria, 1992). Design Issues This is a repeated-measures design because each participant performed the task after each dosage. Descriptions of VariablesVariable Description d0 Number of correct responses after taking a placebo d15 Number of correct responses after taking .15 mg/kg of the drug d30 Number of correct responses after taking .30 mg/kg of the drug d60 Number of correct responses after taking .60 mg/kg of the drug What is the independent variable of this experiment? How many levels does it have? other question is on attachment number 84.
use the vertex (55,30) and the additional point (35,20) from the scatter diagram to find the equation of the parabola in standard form implied by the scatter diagram.
To avoid creating a backlog, all cases must be handled by the end of December. Formulate a linear program that can be used to determine how many Judges the city needs.
Find the amount of the winning bid if there were 7 bidders.
the speed of the ship had been one-fourth greater, the person would have traveled only 1315 miles in the same lenght of time. Find the speeds of the plane and the ship
Solving probability problems based on Binomial distribution
Students receive scores rounded to the nearest 10. What is the interval of student scores that lie within one standard deviation of the mean?
how far downstream does the boater finally land? (Hint: if x is the cross- stream position of the boat and y is its downstream position, find an expression for dy/dx. Then solve for y(x)).
1.) Find the length of the curve (called a semi parabola) given by: y^2=x^3 from the pint (1,1) to the point (9,27) 2.) find the length of the Curve y= (x^2) - (1/8)ln(x) from 1≤x≤5
A bacteria culture starts with 7 bacteria which multiply simultaneously every three house. If the first generation is born fromt he initial group at 12 midnight
A square's side is increased by 11 yards, which corresponds to an increase in the area by 385 square yards. How many yards is the side of the initial square?
Find the amount of an annuity if $300/month is paid into it for a period of 20 years, earning interest at the rate of 2%/year compounded continuously. (Round your answer to the nearest whole number.)
Use your new formula to find the mass of the automobile in kg for each value of force and time given in the table below. Round your answer to the nearest whole number.
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