7 is the absolute value for positive and negative 7, because they are 7 spaces away from the 0 on the number line.
Hope it helps.
Answer:
x=-3
Step-by-step explanation:
Answer:
D. 2.0 is the right answer
Step-by-step explanation:
Note: All decimals were converted to fractions.
The standard deviation of the given distribution is:
σ=1.965
Answer: 27.688
Step-by-step explanation:
The critical chi-square value
depends on significance level (
) and degrees of freedom (df) .
Given significance level: (
) = 1% = 0.01
Degrees of freedom (df)= 13
From the chi-square table, the critical chi-square value for df = 13 and 
is 
Hence, the required critical value = 27.688