a) For given sample size, which as the following is true in the interval estimat

Question

a) For given sample size, which as the following is true in the interval estimation as the mean? I) If the level is decreased, the margin of error is greater II) If the level is increased, the margin of error is smaller III) If the level is increased, the margin of error is greater IV) None of the above b) if we increase the sample size, we can expect I) the interval to get wider and precision to decrease. II) the interval to get wider and precision to increase. III) The interval to get narrow and precision to decrease IV) The interval to get wider and precision to increase. C) The purpose of generating a confidence interval for the mean is to provide an estimate for the value of the I) Sample standard deviation II) Sample mean III) Standard deviation IV) mean d) Rejecting a true hypothesis is I) a type I error II) a type II error III) both a type I and II error IV) a correct decision

Explanation / Answer

a) If the level is increased, the margin of error of is smaller.

b) the interval to get narrow and the precision to increase.

c) populaton mean

d) a type one error.

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