8213 PM Wed May 19 III LTE 88% - a inst-fs-iad-prod.inscloudgatenet S.) The world's smallest mammal is the bumblebee bat, also known as the Kitt's hog-nosed bat. Such bats are roughly the size of a large bumblebee. Listed below are weights from a sample of these bats. Using a 0.05 significance level, test the claim that these weights come from a population with a standard deviation equal to 0.30 g, which is the standard deviation of weights of the bumblebee bats from one region in Thailand. Do these bats appear to have weights with the same variation as the bats from that region in Thailand? 1.7 1.6 1.5 2.0 2.3 1.6 1.6 1.8 1.5 1.7 2.2 1.4 1.6 1.6 1.6 Be sure to determine the Null and Alternate hypothesis, find the critical values, identify the test statistic, decide to Reject or Fail to Reject the Null, and interpret the decision based on the claim. 8213 PM Wed May 19 III LTE 88% - i inst-fs-iad-prod.inscloudgatenet 2.) The claim is that the proportion of drowning deaths of children attributable to the beaches is more than 25%. If in fact, 187 out of 615 children actually drowned at the beach, then with a significance level of 0:: 0.05 test this claim. H a.) H0 state which one is the claim 1 b.) When you find the critical value are you going to use {circle one): z-chart or t-chart? c.) Now find that critical value and show it on your curve (don't forget to shade) d.) Find the test statistic. (Write the formula and solve) e.) That is all you need to either (circle one): Reject H0 or Fail to reject H0 f.) Now write that perfect script based on the claim. g.) Calculate out the P-value h.) Now construct a 95% confidence interval around the proportion A.)E= B.) Interval 8213 PM Wed May 19 III LTE 88% - a inst-fs-iad-prod.inscloudgatenet 3.) A researcher claims that the mean annual production of cotton is 3.5 million bales per country. A random sample of 44 countries has a mean annual production of 2.1 million bales. Assume the population standard deviation is 4.5 million bales. At a 00 = 0.05, can you reject the claim? H . . a.) H0 state which one Is the claim 1 b.) When you find the critical value are you going to use (circle one): zchart or tchart? c.) Now find that critical value and show it on your curve (don't forget to shade) d.) Find the test statistic. (Write the formula and solve) e.) That is all you need to either (circle one): Reject H0 or Fail to reject Ho f.) Now write that perfect script based on the claim. 3.) Calculate out the P-value h.) Not caring about what's above answer these questions: If your P-value 5 alpha you? (circle one): Reject H0 or Fail to reject H0 If your P-value > alpha you? (circle one): Reject H0 or Fail to reject H0 8213 PM Wed May 19 III LTE 88% - a inst-fs-iad-prodeinscloudgate'net 4.) A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. it of Hours Grade Average a.)Do the Chart: Now determine the linear equation and solve what is asked. Write the equations and solve b.) Slope m = c.) Y-intercept b = d.) Now write the equation of the line 9 = e.) Now r value (linear correlation coefficient. f.) What grade could you expect if you only spent 4 hours in lab? Based on the r value would you expect this equation to be accurate indicator of your grade? Why or why not