If all possible samples of size n=30 are selected from a population with H=80 and o=10 and the mean is computed for each sample, then what 1 point shape is expected for the distribution of sample means? The sample means tend to form a normal-shaped distribution only if the population distribution is normal. The mean of each sample will be very close to 80, hence the distribution of means will have little variability. The sample size of n=30 is too small to predict the shape of the distribution.

The researcher took a random sample of 50 residents and found that the mean height of men is 175cm. Suppose that the team is made aware of the fact that the distribution of heights is distributed normally.  1, The sample median is an unbiased estimate of the mean height of men. Is the following statement about the estimator true?    2, Determine whether or not the median or mean is an efficient estimator of the population median.

An IQ test is designed so that the mean is 100 and the standard deviation is 24 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 95​% confidence that the sample mean is within 8 IQ points of the true mean. Assume tha  σ=24 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation.The required sample size is enter your response here. ​(Round up to the nearest​ integer.) Would it be reasonable to sample this number of​ students? Yes. This number of IQ test scores is a fairly small number. No. This number of IQ test scores is a fairly small number. Yes. This number of IQ test scores is a fairly large number. No.This number of IQ test scores is a fairly large number.

please state the approximate distribution of the sample mean