A Head-up Display (HUD) is a transparent display that permits the user to maintain their viewpoint while also being able to view additional information that may be relevant to their task. You have been asked to design a study to evaluate a new aircraft HUD to determine if the display affects the pilot's reaction time for a particular task. Specifically, the concern is if the reaction time will be more than 20 ms from the nominal reaction time. Previous data supports that the standard deviation on the reaction time for the particular task was 30 ms. Required:
a. Based on the information provided, what is the Cohen’s d effect size of interest that you should consider for designing your study?
b. How many subjects will you need for your study if you want to detect the effect size from part (a) with a power of 90% and a level of significance of 1% for examining if there is a larger reaction time?
c. How many subjects would you need for your study if you want to estimate the confidence interval on the mean reaction time with 99% confidence and a confidence interval width of ±10 ms?

i need on these three questions. find standard form equation of line perpendicular to y = (2/3)x - 8 that goes through the point

the equation of a line is -6x-2y=-18 what is the x 3 answers sep 21, 2015

finding the critical point for f(x,y)=(x^2)*y+y^3 1 answer mar 10, 2013

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step-by-step explanation:

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.