number 1

For a population with a mean of = 55 and a standard deviation of = 77, what is the standard error of the distribution of sample means for a sample size of n=9?

leave the answer to the nearest hundredths place.

number 2

The researcher recorded the amount of time each bird spent in the plain chamber during a 60-minute session. Suppose the study produced a mean of M = 54.6 minutes on the plain chamber with SS = 3508 for a sample of n = 14 birds. Construct the 90% confidence interval to estimate the mean amount of time spent on the plain side for the population of birds.

Type only the upper interval by using CI=M+V*SM type your answer to the nearest hundredths place.

TABLE A-3 '5 Distribution: Critical t Values Area in One Tail 0.025 Degrees of Area in Two Tails Freedom 0.01 0.02 0.05 0.10 0.20 1 63.657 31.821 12.706 6.314 3.078 2 9.925 6.965 4.303 2.920 1.886 3 5.841 4.541 3.182 2.353 1.638 4 4.604 3.747 2.776 2.132 1.533 5 4.032 3.365 2.571 2.015 1.476 6 3.707 3.143 2.447 1.943 1.440 7 3.499 2.998 2.365 1.895 1.415 8 3.355 2.896 2.306 1.860 1.397 9 3.250 2.821 2.262 1.833 1.383 10 3.169 2.764 2.228 1.812 1.372 11 3.106 2.718 2.201 1.796 1.363 12 3.055 2.681 2.179 1.782 1.356 13 3.012 2.650 2.160 1.771 1.350 14 2.977 2.624 2.145 1.761 1.345 15 2.947 2.602 2.131 1.753 1.341 16 2.921 2.583 2.120 1.746 1.337 17 2.898 2.567 2.110 1.740 1.333 18 2.878 2.552 2.101 1.734 1.330 19 2.861 2.539 2.093 1.729 1.328 20 2.845 2.528 2.086 1.725 1.325 21 2.831 2.518 2.080 1.721 1.323 22 2.819 2.508 2.074 1.717 1.321 23 2.807 2.500 2.069 1.714 1.319 24 2.797 2.492 2.064 1.711 1.318 25 2.787 2.485 2.060 1.708 1.316