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STAPLES regal clips trombones rega Yohance Douglas - 451 Math130 Test #2C 59 - 12 SHOW ALL YOUR WORK. ANSWERS WITHOUT SUPPORT OR JUSTIFICAITON WILL BE MARKED PARTIALLY CORRECT. 1. Scientists hoping to curb deforestation estimate that the carbon stored in tropical forests in Latin America, sub-Saharan Africa, and southeastern Asia has a total biomass of 247 gigatons spread over 2.5 billion hectares. The scientists measured carbon levels at 4079 inventory plots and also used information form satellite image. A 95% confidence interval for the mean amountof carbon per square kilometer in tropical forests in Latin America, sub-Saharan Africa, and southeastern Asia is 9600 to 13,600 tons. ( 136 a) Interpret this confidence interval Confidence we are 95-20 interval confident that . - 3 136+/-46 - ( 40, 232 ) 1) Since the confidence interval gives the plausible values for the population mean, how canwe find the exact value of the mean amount of carbon per square kilometer in - 2 these forests ? we can find it by calculating the point estimate, of tizz - 1 14 /P= 1 14 Z 2. There is a dataset which contains information on all 135 movies that came out of Hollywood in2011. Twenty-seven of those movies are comedies. a) What proportion of Hollywood movies in 2011 were comedies? Use the correct symbolic notation with your answer. 135 - 0.20%0 b) If we took many samples of size 25 from all Hollywood 2011 movies and recorded the proportion of comedies for each sample, what shape do we expect the distribution ofsample proportions to have? - V The shape we would expect the distribution of sample proportions to haveis a usshape. not exactly be centered