Statistics & Probability: Second Semester
Statistics & Probability: Second Semester
Statistics & Probability: Second Semester
Second Semester
All Strands
STATISTICS &
PROBABILITY
GRADE 11
Prepared by:
Mme. Maristela Ruelo
SEPT. 21-25, 2020 | Page 2 of 11
TOPIC: SAMPLING DISTRIBUTION & T-DISTRIBUTION DATE GIVEN: (February 27, 2021)
QUARTER: Final Term 2nd Semester Module 6 DUE DATE: (March 8, 2021)
OBJECTIVES:
TOPIC: MEAN & VARIANCE OF SAMPLING DISTRIBUTION DATE GIVEN: (February 27, 2021)
QUARTER: Final Term 2nd Semester Stat & Prob Module 7 DUE DATE: (March 15, 2021)
https://bit.ly/3s82uh5
SEPT. 21-25, 2020 | Page 4 of 11
Answer:
SEPT. 21-25, 2020 | Page 5 of 11
EXAMPLES:
1) An automobile battery claims that its midgrade battery has a mean life of 50 months with
standard deviation of 6 months. Suppose the distribution of battery lives of the particular brand is
approximately normal
a) on the assumption that the manufacturer’s claims are true, find the probability that a randomly
selected battery of this type will last less than 48 months.
b) on the assumption, find the probability that the mean of a rando sample of 36 such batteries
will be less than 48 months.
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SEPT. 21-25, 2020 | Page 7 of 11
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TOPIC: POINT & INTERVAL ESTIMATION DATE GIVEN: (February 27, 2021)
QUARTER: Final Term 2nd Semester Stat & Prob Module 8 DUE DATE: (March 22, 2021)
OBJECTIVES:
In your answer sheet entitled “TITLE: STAT & PROB MODULE 8 WEEK 3”
15) The average heights of a random sample of 400 people from a city is 1.75 m. It is known
that the heights of the population are random variables that follow a normal distribution with a
variance of 0.16.