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.
- From the options given below, select the option which states the correct combination of incorrect sentences.
I. The new policy aims to reduce paper... He is a linguist(1)/ and always tries to(2) make his students pronounce(3)/ the words correctly.(4)
When we entered the party , everyone around was all decked for and looking beautiful
In the following question, a sentence is given, divided into five parts. Part in bold is grammatically correct. Out of the other four parts, one part c...
No sooner she had realized (a) / her blunder than she began (b) / to take corrective measures (c) / No error (d)Â
Shooting as well as horse riding (A) are taught to cadets (B) at the National Defence Academy (C) every morning. (D) / No error (E)
The roof besides them had a (A) great hole smashed through it, (B)/ and pieces of glass was lying (C)/ scattered on every direction (D).
In the question given below, a sentence is given, divided into parts. One of the parts may contain an error. Identify the part that contains t...
Despite of all the importance attached to water, there has been no effective mechanism adopted to prevent its pollution.
...Find the appropriate word.
