CUET Mathematics - If 95 \% confidence interval for the population mean was reported to be 160 to 170 and =25, then size of the sample used in this study is: (Given Z_0.025=1.96 ) | PYQs + Solutions

CUET Mathematics

Statistics & Applications

Medium

applied

$96$

$125$

$54$

$81$

✅ Correct Option: 1

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If a 95% confidence interval for a population mean was reported to be 132 to 160 and sample standard deviation $\sigma = 50$ , then the size of the sample in the study is:

(Given $z_{0.025} = 1.96$ )

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