The alternative hypothesis is a claim about a

The alternative hypothesis is a claim about a

Subject: Mathematics / Statistics
Question
1.The alternative hypothesis is a claim about a:

A. statistic, where the claim is assumed to be false until it is declared true

B. statistic, where the claim is assumed to be true if the null hypothesis is declared false

C. population parameter, where the claim is assumed to be true until it is declared false

D. population parameter, where the claim is assumed to be true if the null hypothesis is declared false

2. A sample of size 70 from a population having standard deviation Ï = 49 produced a mean of 247.00. The 95% confidence interval for the population mean (rounded to two decimal places) is:

The lower limit is

The upper limit is

3. The width of a confidence interval depends on the size of the:

A. population mean

B. margin of error

C. sample mean

D. none of these