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CM Rana Ali Akbar
Answers (6)
CR
Answered
In a 4 × 3 factorial design,how many levels of the second grouping factor are there?
A) 3
B) 4
C) 7
D) 12
A) 3
B) 4
C) 7
D) 12
On Jul 14, 2024
A
CR
Answered
A ______ symbol is part of the ______ hypothesis, and implies this hypothesis is ______.
A) ≠; null; directional
B) ≠; alternative; directional
C) < or >; null; non-directional
D) <; alternative; one-tailed
A) ≠; null; directional
B) ≠; alternative; directional
C) < or >; null; non-directional
D) <; alternative; one-tailed
On Jul 10, 2024
D
CR
Answered
Write the number 154 as a product of prime factors.
A) 2.7.14
B) 7.11
C) 2.7.11
D) 11.14
E) 7.22
A) 2.7.14
B) 7.11
C) 2.7.11
D) 11.14
E) 7.22
On Jun 14, 2024
C
CR
Answered
A sample of 13 college professors has a mean age of 30 years and a standard deviation of 5 years.Suppose that the sample is enlarged to 15 college professors,by including two additional professors that are each 30 years old.Will the standard deviation increase,decrease,or stay the same,and why?
On Jun 09, 2024
The new standard deviation will be smaller than the original one because the two new professors' ages don't deviate from the mean,but they add two more observations to the data set,bringing down the average deviation from the mean.The new standard deviation actually is s = 4.643.
CR
Answered
The pooled-variances t-test requires that the two population variances need not be the same.
On May 13, 2024
False
CR
Answered
Goldilocks decides the porridge that is "just right" is neither too cold nor too hot. The relationship between porridge temperature and Goldilock's preferences may be described as ______.
A) nonlinear
B) zero
C) skewed
D) negative
A) nonlinear
B) zero
C) skewed
D) negative
On May 10, 2024
A