Unit 3- 1.2- Large Sample Tests- For A Single Mean

Question 1

Parameters and statistics

Answer 1

Parameter- numerical value of population
population mean- μ
Standard deviation- σ
Variance- s²

Statistic- numerical value of sample
Sample mean- x bar
Standard deviation- s
Variance- σ ²

Question 2

Goal of large sample tests

Answer 2

Nammade sample inn kittiya mean value pinne population de mean value il significant difference Indo enn check cheyyan aan ith use cheyyane

Nammade sample mean - x bar
Nammade population mean- mew

Question 3

Test stastics formula

Answer 3

Z = x – μο /σ / √n
Z- test statistics
Xbar- sample mean
Mew not- population mean
Sigma- standard dev of population
n- sample