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It appears that some people judge candidates for elected office by their faces. Psychologists showed head-and-shoulders photos of the two main candidates in 32 races for the US Senate to many subjects (dropping subjects who recognize one of the candidates) to see which candidate was rated "more competent" based on nothing but the photos. On election day, the candidates whose faces looked more competent won 22 of the 32 contests. If faces don't influence voting, half of all races in the long run should be won by candidate with the better face. Is there evidence that the proportion of time the candidate with the better face wins is more than 50%? a) Explain in words what the parameter p is in this setting. b) What the null and alternative hypotheses Ho and Ha? c) What is the numerical value of the sample proportion ^p? The P-value is the probability of what event? d) The P-value is P=0.017. Explain carefully why this is reasonably good evidence that Ho is not true and that Ha is true?
Is the result above statistically significant at the 5% level? At the 1% level?
how to solve: The cross section of a large telescope diameter of 360 ft and a maximum depth of 36 feet. What is the equation of this parabola?
A car rental company is interested in the amount of time its vehicles are out of operation for repair work.
A trough is 15 ft long and 4 ft across the top . Its ends are isosceles triangles with height 3 ft. Water runs into the trough at the rate of 2.5 ft3/min. How fast is the water level rising when it is 2.11 ft deep? Give your answer correct to 3 de..
What year is it in Japan right now. This is a Math question and I believe it has something to do with with change in Calendar systems and the fact Japan drops a month.
A particle starts at the point (-2,0), moves along the x-axis to (2,0), and then along the semicircle y= squareroot(4 - x^2) to the starting point.
Does this suggest there is a linear relation between attendance and achievement score? Write a sentence that explains what this result might mean.
A metal storage tank with a mximum volume of 1200 m^3 is to be constructed in the shape of a right circular sylinder surmounted by a hemisphere. What radial and height dimensions will require the least amount of material?
Who was Richardson's extrapolation named after? What are some of his significant contributions from his work in mathematics and/or related fields? Be sure to include at least one citation and reference for a scholarly source outside of your textbo..
application of matrices in real word problems.five neighborhoods nb all want to raise money for a playground for their
the turtle never stopped for a break, but his pace was only 1 km hr. how long will the rabbit run before it catches the turtle?
from a rectangular piece of cardboard having dimensions an open box is to be made by romoving squares of area x squared from each corner and turning up the sides.
a how long does it take for money to double in value if it is invested in an account at 5 interest compounded
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