PSTAT 5LS Midterm 2 2025/2026 Exam Questions and Answers | 100% Solved

PSTAT 5LS Midterm 2 2025/2026 Exam
Questions and Answers | 100% Solved



Central Limit theory (case 1) - 🧠 ANSWER ✔✔Large sample, is taken from

a population with any type of distribution that has a mean mew and std dev

sigma

-sample means will have a normal distribution


Central limit theory (second case) - 🧠 ANSWER ✔✔If a sample of any size

is taken from a population with a normal distribution with mean mew and

std dev sigma

-the dist of means of sample size n will be normal


Population mean - 🧠 ANSWER ✔✔


Sample mean - 🧠 ANSWER ✔✔


Mean of sample means - 🧠 ANSWER ✔✔


Standard deviation of sample means - 🧠 ANSWER ✔✔




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, Sampling distributions - 🧠 ANSWER ✔✔the probability distribution of a

statistic


Rules for sampling distribution - 🧠 ANSWER ✔✔-for samples size n=30+

the distribution of the sample means can be approximated by a normal

distribution

-check binomial criteria


sample proportion - 🧠 ANSWER ✔✔


Sampling distribution of p hat - 🧠 ANSWER ✔✔as the sample size

increases, the sampling distribution becomes normal


mean of a sampling distribution of p hat - 🧠 ANSWER ✔✔


Confidence Interval - 🧠 ANSWER ✔✔use sample data that researcher is

confident covers true value for population


Hypothesis testing - 🧠 ANSWER ✔✔use sample data to reject hypothesis

that nothing interesting is happening


Point (sample) estimate - 🧠 ANSWER ✔✔a single value estimate for a

population parameter



COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
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