hello chegg this questions with steps please 37) Use the box-and-whisker plot be

Question

hello chegg this questions with steps please

37) Use the box-and-whisker plot below to determine which statenhert is accurate. 211 5 154 205 200 225 250 Cholesteral 150 175 275 in miligrams per deciter) A) About 25% of the adults have cholesterol levels of at most 211. B) One half af the dholeserol levels are between 15D and 211 C One half of the cholesterol levels are between 180 and 1975. D) About % of the adults have cholesterol levels less than 180 38) Many firms use on-the-job Iraining to teach their employees computer programming. Suppose 38) you work in the personnel department of a firm that jast finished training a group of its employees to program, and you have been requested to review the performance of one of the trninees on the final best that was given to all trainees. The mean and standard deviation of the test scores ar 72 and 5, respectively, and the distribution of scores is bell-shaped and symmetric. Suppose the trainee in question received a score of 68. Compate the trainee's z-score. A) 2 08 B> z = 0.38 C)-080 39) For the mathematics part of the SAT, the mean is 514 with standard deviation of 113, and for the mathematics part of the ACT the mean is 2d& withstandard deviation of .1 Bob core53 660 on the SATand a 27 on the ACT. Use z-scores to determine on which test he pertormed beter. A) ACT B) SAT 40) The birth weights for twins are normally distributed with a mean of 2353 grams and standard 4) deviation of 647 grams Use z-scores to determine which birth weight could be considered unusual A) 1200 g C)3647 g D) 2353 g

Explanation / Answer

As per the Chegg policy, we are advised to do one question at a time so i am attempting the 37th.

37. The end lines of the box in a boxplot represents Q1 and Q3 which covers the middle 50% of the total area.

Here,

Q1 = 180

Q3 = 211

Hence,

One half of the Cholesterol levels are between 180 and 211.

Option B is correct.

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