A doctor claims that the standard deviation of systolic blood pressure is 12 mmHg
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A doctor claims that the standard deviation of systolic blood pressure is 12 mmHg

1.) A doctor claims that the standard deviation of systolic blood pressure is 12 mmHg. A random sample of 24 patients found a standard deviation of 14mmHg. Assume the variable is normally distributed. At a=0.01, what are the critical chi square values?

2.) A political strategist claims that 58% of voters in Madison County support his candidate. In a poll of 500 randomly selected voters, 260 of them support the strategist's candidate. At a=.05, is the political strategist's claim warranted? What is the test value? 

Hint
Statistics1. popn sigma = 12n = 24sample sigma = 14critical value = upper one tailed 41.63839812lower one tailed 10.19571556two tailed alternative 38.96831129...

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