Question: ow can you decrease the variability in a sample poll? (2 points) Increase the sample size Decrease the sample size Increase the bias Decrease the

ow can you decrease the variability in a sample poll? (2 points) Increase the sample size Decrease the sample size Increase the bias Decrease the bias None of the aboveThe Lakeland Post polled 1,231 adults in the city to determine whether they wash their hair before their body while in the shower. Of the respondents, 63% said they washed their hair first. Suppose 51% of all adults actually wash their hair first. What are the mean and standard deviation of the sampling distribution? (2 points) The mean is 0.51 and the standard deviation is 0.0142. The mean is 0.51 and the standard deviation is 0.0138. The mean is 0.63 and the standard deviation is 0.0226. The mean is 0.63 and the standard deviation is 0.0138. The mean is 0.63 and the standard deviation is 0.0142

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