Business Statistics - Study Mode
[#261] The quality of information is governed by the
Correct Answer
(D) Information processing system design
[#262] When one regression coefficient is negative, the other would be
Correct Answer
(A) negative
[#263] Statement I Exponential probability distribution has the mean = $$frac{1}{mu }$$ and variance = $$frac{1}{{{mu ^2}}}$$ Statement II The mean, median and mode do not coincide in the normal distribution. Statement III The binomial distribution is symmetrical for any value of p (probability of success).
Correct Answer
(C) Statement I is true, while Statements II and III are false
[#264] Standard error can be calculated by
Correct Answer
(B) $$frac{{1 - {r^2}}}{{sqrt N }}$$
[#265] Standard error of the difference between the proportions of two variable can be computed by
Correct Answer
(A) $${ ext{SE}}left( {{p_1} - {p_2}}
ight) = sqrt {pqleft( {frac{1}{{{n_1}}} + frac{1}{{{n_2}}}}
ight)} $$