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# Is there really global warming? Some stat students , alarmed by the crazy summer we had in Houston, decide to check it out. The usual average high

wanting to check my review for my exam over hypothesis and confidence intervals

Is there really global warming? Some stat students , alarmed by the crazy summer we h decide to check it out. The usual average high temperature in August is 94.5. With our record string of 100 degree plus temperatures they gathered this data for the h in August 2011: 99 93 101 100 101 100 100 95 93 102 100 101 100 93 95 90 100 101 Can the students conclude that August was unusually warm? Do a hypothesis test using 0.1 more than 2.58= reject hypothesis 2 Houston just had its mayoral race and the Houston Chronicle is studying turnout in diFe districts in the city. They ±nd that the average voter turnout in District A has been 39.5 standard devia²on of 10%. In District C the average turnout has been 31% with a stand Can the Chronicle conclude that there is really a diFerence in voter turnout between the Do a hypothesis test using an alpha of .05. 2 tail 1.96 Does the 95% con±dence interval con±rm your conclusion from above?
had in Houston, high temperatures 97 99 101 102 98 99 90 96 Average 94.5 100 101 100 102 Average 98.3 Std 3.524789062 g an alpha of .01. count 30 s N= 30 one tail Mean 100 Var 12.56410256 SE 0.647150229 erent zscore 5.904880213 5% with a SE 0.643535493 ard devia²on of 15%. e two? 0.5 District A average 39.50% 39.5 var 100 N std 10% 10 margin error 19.6 SE 2.227560396 con±dence int District C average 31% 31 std 15% 15 Var 225 margin error 29.4 SE 3.771711343 N 15.81632653 Con±dence Interval 14.4 44.4
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Question 1: Is there really global warming? Some stat students , alarmed by the crazy summer we had in Houston,
decide to check it out. The usual average high temperature in August is 94.5.
With...

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