Question
A study estimates the average weight of a population
with a 95% confidence interval of (65 kg, 75 kg). What does this mean?Solution
A confidence interval estimates the range within which the true population parameter (e.g., mean) is likely to fall, given the sample data. In this case, there’s a 95% probability that the interval (65 kg, 75 kg) includes the true mean weight of the population. Confidence intervals help quantify the uncertainty associated with estimates, providing more context than point estimates alone. Why Other Options Are Wrong : A) The mean might not be exactly 70 kg; it’s just an average of the range. B) Confidence intervals describe means, not individual values in the population. C) The interval relates to the population mean, not the sample mean. E) Confidence intervals provide a probabilistic estimate, not a guarantee.
'A $ B' means 'A is the mother of B'. 'A % B' means 'A is the wife of B'. 'A @ B' means 'A is the sister of B'. 'A # B' means 'A is the son of B'. If I ...
In expression ‘G $ H & I @ J # K % L $ M & N’ who is the only daughter of I?
P + Q means ‘P is the brother of Q’, P - Q means ‘P is the daughter of Q’, P ÷ Q means ‘P is the husband of Q’, P × Q means ‘P is the so...
How is H related to M?
If J & I @ H + G is true then, how is G related to J?
If F & G $ I @ H % J is true then how is F related to J?
'A # B' means 'A is the husband of B'. 'A @ B' means 'A is the mother of B'. 'A & B' means 'A is the sister of B'. 'A $ B' means 'A is the child of B'. ...
Statements : X = E > U, T ≥ V > W, E > W = U
Conclusions : I. T >U II. X ≥ V
Which of the following can be the correct conclusion drawn from the expression?
‘R + S % T $ U @ V’?
A # B means ‘A is the brother of B’
A @ B means ‘A is the daughter of B’
A & B means ‘A is the husband of B’
A % B ...
