According to a recent Gallup poll, 60% of adult Americans said that the Covid-19 situation in the U.S. is improving. Suppose you extract a random sample of 100 adults in your community, the sample proportion is the proportion of adults in this sample who say that the Covid-19 situation in the U.S. is improving. a) The mean of the sampling distribution of this sample proportion is: A) 0.19 B) 0.60 C) 0.40 D) cannot be determined b)The standard deviation of the sampling distribution of this sample proportion is: A) 0.6000 B) 0.0024 C) 0.2800 D) 0.0490 c)Determine the probability that less than 50% of the persons in the sample will say that the Covid-19 situation in the U.S is improving A) 0.0375 B) 0.0834 C) 0.0207 D) 0.5000
According to a recent Gallup poll, 60% of adult Americans said that the Covid-19 situation in the U.S. is improving. Suppose you extract a random sample of 100 adults in your community, the sample proportion is the proportion of adults in this sample who say that the Covid-19 situation in the U.S. is improving.
a) The mean of the sampling distribution of this sample proportion is:
A) 0.19 B) 0.60 C) 0.40 D) cannot be determined
b)The standard deviation of the sampling distribution of this sample proportion is:
A) 0.6000 B) 0.0024 C) 0.2800 D) 0.0490
c)Determine the probability that less than 50% of the persons in the sample will say that the Covid-19 situation in the U.S is improving
A) 0.0375 B) 0.0834 C) 0.0207 D) 0.5000
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