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The virgo cluster contains about 1300 galaxies and is at a

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The Virgo cluster contains about 1300 galaxies and is at a distance of 16 Mpc. The galaxies have an RMS velocity about their center of mass of 600 km/s. How many galaxies do we need to observe in Virgo to reduce the error in Ho (hubble constant) due to peculiar velocities to 5%? Hint: look up how you calculate the error on a mean if you don't know.

Reference no: EM13610128

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