Mrs. Hall records the heights of 50 students in a spreadsheet. The mean height is 68 inches. After looking at the data again, she realized that two of the 50 observations were outliers that must have been typos, 82 and 86 inches. She deleted these two observations. What is the new mean, rounded to the nearest hundredth?

Answers

Answer 1
Answer: So, in the situation when she still had the 50 students, the sum of their heights was

50*68=3400 (you can pretend here that all the students are 68 inches tall)

She subtracted the outliners:

3400-82-86=3232, so the new sum is 3232.

She now has to divide it by the number of the students which is now lower by 2: 48

So, 3232/48=67,33

the new mean is 67,33!

Answer 2
Answer:

Answer:

Its 67.33 hope its helps Give me a heart plz

Step-by-step explanation:


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Answer:

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Jeremy loves snowboarding. His favorite stunt is catching big air and jumping off the ramp while holding on to the snowboard. Jeremy did this 20 times and recorded the heights (in meters) he achieved in each attempt. He wants to know whether his data set has negative, positive, or zero skew. {18, 23, 15, 16, 15, 17, 22, 16, 19, 11, 24, 14, 12, 16, 20, 18, 14, 13, 21, 11}
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Answers

To be able to determine the type of skew exhibited by the distribution of the heights he achieved in each of his attempt we arrange the distribution in order and obtain the frequency of each data in the distribution. Height (meters): 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 Frequency: 2, 1, 1, 2, 2, 3, 1, 2, 1, 1, 1, 1, 1, 1 Calculating the mean gives (11 x 2 + 12 + 13 + 14 x 2 + 15 x 2 + 16 x 3 + 17 + 18 x 2 + 19 + 20 + 21 + 22 + 23 + 24) / 20 = 335 / 20 = 16.75 Since there are more higher frequencies to the left of the mean we conclude that the distribution exhibits a positive skew.

Ach Sunday, Mario weighs himself. Here are his weight changes over a 4-week period. Week 1 2 3 4 Weight Change –1.8 +0.9 –1.4 +0.4 How much has Mario's weight changed over the entire 4 weeks?a. 4.5 pounds
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Answers

B. All you do is -1.8 + 0.9 - 1.4 + 0.4, and you get -1.9   And if  you want to see for your self just open a new tab on google and type in the numbers like the format i put it in and google calculator will give you the answer!

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Answers

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Answers

1st week - Lost 3 pounds = +3 
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So Tina lost 24 pounds in 13 weeks. 

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Answers

-11a^2+1ab+4b^2; P-Q would mean you rearrange the equation to where (-4a^2-2ab+9b^2)-(7a^2-3ab+5b^2). Don't forget to distribute the negative for Q since you plugged it into a variable.

-4a^2-2ab+9b^2-7a^2+3ab-5b^2

Add/Subtract like terms

-11a^2+1ab+4b^2