Question

1) (8 points) Identify the critical t. An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the degrees of freedom and the critical t value ?∗t∗ for the given sample size and confidence level. Round critical t values to 4 decimal places.

(8 points) Identify the critical t. An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the degrees of freedom and the critical t value t* for the given sample size and confidence level. Round critical t values to 4 decimal places Critical value, t* Sample size, nConfidence level Degree of Freedom 2 90 28 95 17 98 15 99

Answer 1

solution : Here we value. find Degree of freedom and to critical Here nao ao 4. c.I degree of freedon (df) anal ATE=24 La ool Coritical vaite (t) = ta,de fi tool,! 6 - 6-3138 [from t-table ... twow.atol. "? Here 17.28, 95.. 06. C. I . df = 27 do 1-0.95 * = 0.05 critical value (t) = ta, at to.es, 27 E = 2.05181 room t-tablet temo - lewil.

Here n=17, 984. ob o.I. de ani = 17-1 df = 16 1-0.98 < =0.02 critical value (t) = tandf a = $0.02,16. to 2.5835 [Foori t-table two tail - (1) Here na 15, aqr. ob c. I [df = 14] L 1 -0.99 0.01 critical valle ct.) a ta dr tool in [four t-table] two-tail. = L= 29768 Degree ols- Feedom Saridle size, ni contidence level Citical value, 2 90 6.3138 95 27 2.0518 16 2.5835 99 14 2.9768