GATE-ES SERIES Mathematics-foundation
Probability Distribution
2 previous year questions.
Volume: 2 Ques
Yield: Medium
High-Yield Trend
2
2022 Chapter Questions 2 MCQs
01
PYQ 2022
medium
mathematics-foundation ID: gate-es-
X is normally distributed with the following data (25.8, 36.6, 26.3, 21.8, 27.2). Select the correct statement about X ( ):
1
Population mean with 95% confidence
2
Population mean with 100% confidence
3
Population mean with 95% confidence
4
Population mean with 100% confidence
02
PYQ 2022
medium
mathematics-foundation ID: gate-es-
An individual has four different email accounts. 60% of emails come into his corporate account,
30% come into his gmail account and the remaining 10% are equally divided into his yahoo and zoho accounts.
Only 1% of the emails in his corporate accounts are spam, whereas corresponding percentages for gmail, yahoo
and zoho accounts are 2%, 3% and 3%, respectively. Assuming that the same spam filter is used in all the four
email accounts, the probability (in percentage, rounded off to one decimal place) of having a randomly selected
email as spam is ____________.
30% come into his gmail account and the remaining 10% are equally divided into his yahoo and zoho accounts.
Only 1% of the emails in his corporate accounts are spam, whereas corresponding percentages for gmail, yahoo
and zoho accounts are 2%, 3% and 3%, respectively. Assuming that the same spam filter is used in all the four
email accounts, the probability (in percentage, rounded off to one decimal place) of having a randomly selected
email as spam is ____________.