Bernardo M Chapter 7 Homework Ak ×eChegg Study I Guided SXVM Test Chapters 1-7 d

Question

Bernardo M Chapter 7 Homework Ak ×eChegg Study I Guided SXVM Test Chapters 1-7 d ezto.mheducation.com/hm.tpx Question 33 (of 40) Save & Exit Submit Time remalning: 2:21:49 33. 2.00 points MC Qu. 37 If the wages of workers for a given.. If the wages of workers for a given company are normally distributed with a mean of $15 per hour, then the proportion of the workers earning more than $13 per hour O is greater than the proportion earning less than $13 per hour. O is greater than the proportion earning less than $18 per hour O is less than 50 percent. O is less than the proportion earning more than the mean wage Multiple Choice Difficulty: 3 Hard MC Qu. 37 If the wages of workers Leaning Objective: 06-04 Use the normal for a glven.. distribution to compute probabilities 10:51 PM 10/30/2017

Explanation / Answer

33) answer is (a) as the normal distribution is symmetric so 50% will lie on each side of the mean (mean =15) so P(X>13) is greater than the proportion earning less than 13

34) answer is (c) the fill weight is less than 910g as z = (x-mean)/standard dev

So for z to be negative x<mean

35) (a) equal to one as area under the curve =1 i.e. cumulative distribution function = 1

36) (b) continuous as a continuous random variable X takes all values in a given interval of numbers.

37) (a) the standard deviation of normal distribution =1

38) (d) 0.0668 as P(z<(29.75-30.05)/0.2)

=1-P(z<1.5)

=1-0.93319 = 0.0668

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