a+b=(2−1)i^+(−1+1)j^+(2−1)k^=i^+k^. Magnitude =2. Unit vector =(1/2)i^+(1/2)k^.
In the formula for Z-test statistic Z = x - μ_0 σ √n, mark the incorrect statement.
CUET UG 2023 — Mathematics Applied-Mathematics
2023mcqeasy
In the formula for Z-test statistic Z=nσxˉ−μ0, mark the incorrect statement.
Official previous-year question
Held on 23 May 2023 · Verified 13 Jul 2026.
Options
- A
xˉ is sample mean
- B
μ0 is population mean
- C
n is sample size
- D
σ is variance of the population
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