You Are Interested in Determining Whether the Mean Price of Electricity

question 90

Multiple Choice

You are interested in determining whether the mean price of electricity offered by solar companies is different in the southern states than in the northern states.You select a random sample of 8 solar companies from the southern states and 11 from the northern states.For the southern states,the average price is 12.2 cents per kWh (kilowatt hour) and the standard deviation is 0.8 cents per kWh.For the northern states,the average and standard deviation are 11.7 and 1.0 cents per kWh respectively.If you use a significance level α = 0.10 and assuming the values are normally distributed in both populations,the critical t value is ______.

• A) 1.330
• B) 1.729
• C) 1.734
• D) 1.740
• E) 1.747

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Definitions:

Plessy v. Ferguson

A landmark 1896 Supreme Court case that upheld state-imposed racial segregation based on the "separate but equal" doctrine.

Segregation

The enforced separation of different racial or ethnic groups within a society, often leading to discrimination or unequal treatment.

Civil Rights

The rights of citizens to political and social freedom and equality, often protected under law from discrimination on grounds such as race, gender, or sexual orientation.

Equal Protection

Refers to the constitutional guarantee under the Fourteenth Amendment that no state will deny any person within its jurisdiction the equal protection of the laws.