question 1 a) A population of scores has a mean of 25 and a standard deviation of 7. Therefore, the sampling distribution of the mean, for samples of size 17 drawn from this population, has a standard error of _____

round to at least5decimal places.

b) If a normal distribution has a mean of 17.59 and standard deviation of 10.66. What proportion of the distribution of means falls between 16 and 19 when sample size is 41?

round to at least5 decimal places.

c) A normal distribution of scores has a mean of 50 and a standard deviation of 83.6. A sample of 63 scores has been drawn from this distribution. The mean (m) of the sample is 47.91. Compute the lower limit of the 95% confidence interval around m.

round to at least5 decimal places.