Write 8/9 as a decimal.
2 answers:
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The bench costs $450.
You first need to subtract the difference between the garden table and the bench from the total so they are equivalent, and then divide by two to find what the bench is on its own.
(The garden table costs $536, by the way. To find that, you just need to add its half of 900, 450, to the 86 you subtracted initially.)
Tell me if this doesn’t make sense, it’s sort of hard to explain!
You first need to subtract the difference between the garden table and the bench from the total so they are equivalent, and then divide by two to find what the bench is on its own.
(The garden table costs $536, by the way. To find that, you just need to add its half of 900, 450, to the 86 you subtracted initially.)
Tell me if this doesn’t make sense, it’s sort of hard to explain!
<em>Answer:</em>
<em>For grade A ,a student needs Z score of 2 or above, the required score is</em>
<em> X = 68 + 12Z =92, For grade B, a student needs Z score between 1 and 2 . </em>
<em> The required score is = 68 + (12 * 1) < X = 68 + ( 12 * 2) = 80 < X < 92, For grade C ,a student needs Z score between -1 and 1 . The required score is = 68 + ( 12 * x - 1) < X = 68 + (12 * x 1) = 56 <X<80. For the grade D, a student needs Z score between -2 and -1 . </em>
<em> The required score is = 68 + (12 * x -2) < X = 68 + (12 * x -1) = 44< X< 56</em>
Step-by-step explanation:
<em>From the given question, </em>
<em>let the rv X represent student's score.</em>
<em>Z = x - 68/12 ~ N (0,1 )</em>
<em>Now, we know for a standard normal distribution</em>
<em>Thus,</em>
<em>For grade A ,a student needs Z score of 2 or above, the required score is</em>
<em> X = 68 + 12Z =92</em>
<em>For grade B, a student needs Z score between 1 and 2 . </em>
<em> The required score is = 68 + (12 * 1) < X = 68 + ( 12 * 2) = 80 < X < 92</em>
<em>For grade C ,a student needs Z score between -1 and 1 . </em>
<em> The required score is = 68 + ( 12 * x - 1) < X = 68 + (12 * x 1) = 56 <X<80</em>
<em>For the grade D, a student needs Z score between -2 and -1 . </em>
<em> The required score is = 68 + (12 * x -2) < X = 68 + (12 * x -1) = 44< X< 56</em>
<em>For student with score less 44 gets an F.</em>
<em>Note: find an attached image for the graphic sketch of the normal distribution.</em>
