Need help to solve step by step for review:

Need help to solve and show step by step for review: Given: 136, 126, 130, 126, 139, 141, 137, 133, 138, 131, 129, 134. a.) Find the Mean b.) Find the median c.) Find the mode d.) Q1 e.) Q3 f.) IQR g.) Find the variance h.) Find Standard deviation i.) Now with the sample standard deviation, construct 90% confidence interval around the mean. Hint for the final sample means t-score. A.) Find E = B.) Interval2.) The claim is that the proportion of drowning deaths of children attributable to the beaches is more than 25%. lfin fact, 187 out of 615 children actually drowned at the beach, then with a significance level of o alpha you? (circle one): Reject H0 or Fail to reject H0 4.) A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. Average a.)Do the Chart: 2 x = 23/ = 2 x2 = 23/2 = 2063/) = 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 7" 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? 5.) The world's smallest mammal is the bumblebee bat, also known as the Kitt's hognosed 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