MIDTERM EXAM STUD MIDTERM EXAM STUDI ,: TN 6.3. Introduction t Test +2++Practice

Question

MIDTERM EXAM STUD MIDTERM EXAM STUDI ,: TN 6.3. Introduction t Test +2++Practice.AnsB Test +2 awh.connectmath.com/alekscgi/x/lsl.exe/1o u-lgNslkr78P3jH-IBS xZvCapletwzpEF4G2dPk30dfCjF6HjCtialA62ulqsUY21S MATH Hosted by ALEKS Corp. Unit 2 Homework Previous 21 22 23 24 25 26 27 28 29 30 Next Question 28 of 30 (1 point) 6.3 Section Exercise 9-14 (calc Below, n is the sample size, p is the population proportion and is the sample proportion. Use the Central Limit Theorem and the TI-84 caleulator to find the probability. Round the answer to four decimal places. n = 101 p = 0.24 P (0.20

Explanation / Answer

here std error =(p(1-p)/n)1/2 =0.0425

therefore P(0.2<phat<0.3)=P((0.2-0.24)/0.0425<Z<(0.3-0.24)/0.0425)=P(-0.9413<Z<1.4119)=0.9210-0.1733=0.7477

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