Question
Which of the following statements is
true?Solution
This statement is a representation of the relationship between the probabilities of type I and type II errors in statistical hypothesis testing. The sum of these two probabilities is always equal to 1. Type I Error (False Positive): The probability of rejecting a true null hypothesis. Type II Error (False Negative): The probability of failing to reject a false null hypothesis. Therefore, the sum of the probability of making a Type I error and the probability of making a Type II error equals 1. This relationship is fundamental in understanding the trade-off between these two types of errors in hypothesis testing.
- E and F can complete a task in 24 days together. E alone can do it in 40 days. Find the time F alone would take.
It takes a team of either 20 boys or 35 girls, 27 days to achieve a sales target. How many days will it take for a team consisting of 21 boys and 42 gir...
'Andy' and 'Ben' together can finish some work in 27 days. If 'Andy' alone can finish it in 45 days, then find the time taken by 'Ben' to finish the wor...
Sita is 50% more efficient than Simran. Working together, they finish the work in 24 days. How long will Sita take to complete the work alone?
- Alok finishes 60% of a project in 30 days, while Neha finishes 20% of the same in 15 days. Alok worked for 25 days and then stopped. Find the time taken by...
P alone can finish a piece of work ‘M’ in 8 days while Q takes 4 days to finish it alone. P, Q and R working together can finish the work &l...
βXβ and βYβ together can finish an assignment in 30 days while βYβ and βZβ together can finish the same assignment in 45 days. βXβ a...
βPβ and βQβ can complete a task together in 30 days. If βPβ is 60% more efficient than βQβ, how many days will βQβ take to finish th...
- Ritu completes 50% of a project in 25 days, while Sheetal completes 40% in 32 days. Ritu works for 30 days and then stops. Find the time Sheetal needs to f...
X and Y alone can complete a work in 10 and 40 days, respectively. 50% of the work is completed by Z in 20t days, and the remaining work is completed by...