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Do Homework-Brooke Allen-Google Chrome Secure https //www.mathal.com/Student/playerHomewor Phomeworkld 449511082&question;!d MATH 2300-010 Fall 2017 Brooke Alen Homework: Chapter 6 Homework Score: 0 of 1 pt 6.2.81 21 of29(24 complete) HW Score: 68.3 Determine the two z-scores that divide the area under the standard normal curve into a middle 0.1 area and two outside 0.45 areas Click here to view page 1 The Z-scores are (Use a comma to separate answers as needed Round to two decimal places as needed) Enter your answer in the answer box and then click Check Answer All parts showing Clear Al

Explanation / Answer

(a) Let's calculate z such that area from P(Z=0) to P(Z1) is .05 and similarly, area from P(z=0) to P(-z1) is also .05. Clearly,now the other area is .9 , as area between -z1 to z1 is .1.From, z-table, we find out that such value of z1 is .13 and hence, z-value are .13 and -.13.

(b) mean is 17.92 and standard deviation is 1.86. Now, z-value corresponding to 16 and 17 is ( 16-17.92)/1.86 and (17-17.92)/1.86 ie -1.03 and -.49.. Now, lets calculate the p-value corresponding to these values, basically probability corresponding to P(-.49) - P(-1.03) will give us the required answer= .3121-.1515=.1606, so 16.06% of tarantual will lie between 16 and 17

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