Question

Weights of male mountain lions follow the normal distribution with a median of 150 lb and an interquartile range of 8.2 lb.

Answer 1

what's the question, could you be more specific?

Answer 2

Find the 75th percentile of the weights

Answer 3

a.154.11
b.160

Answer 4

0.674*6.12 + 150 = 154.11
1.645*6.12 + 150 = 160

Answer 5

Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recorded times, the height of the bar over the interval “1 hour to 3 hours” is 4% per hour. The height of the bar over the interval “3 hours to 6 hours” is 2% per hour. If the histogram is redrawn with just a single bar over the interval “1 hour to 6 hours”, what should the height of the bar be?

Answer 6

@ankitojha, please can u explain to me how you got this correct answer?

Answer 7

0.674*6.12 + 150 = 154.11 1.645*6.12 + 150 = 160

Answer 8

@ankitojha, @dinakar, i mean how did u convert the iqr 8.2 to 6.12

Answer 9

dnt knw exactly, ill let u knw

Answer 10

Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recorded times, the height of the bar over the interval “1 hour to 3 hours” is 4% per hour. The height of the bar over the interval “3 hours to 6 hours” is 2% per hour. If the histogram is redrawn with just a single bar over the interval “1 hour to 6 hours”, what should the height of the bar be?

Answer 11

Q3-Q1= SD(z3-z1)
8.2 = SD(0.67-(-0.67))
SD=8.2/1.34
SD=6.12

0.674*6.12 + 150 =154.11 for 75th percentile
1.645*6.12 + 150 = 160 for 95th percentile

Answer 12

Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recorded times, the height of the bar over the interval “1 hour to 3 hours” is 4% per hour. The height of the bar over the interval “3 hours to 6 hours” is 2% per hour. If the histogram is redrawn with just a single bar over the interval “1 hour to 6 hours”, what should the height of the bar be?

Answer 13

http://en.wikipedia.org/wiki/Interquartile_range

Answer 14

@ankitojha, you ROCK!

Answer 15

can u reply for my new question

Answer 16

The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm.

Answer 17

One of the petals is 0.2 cm wider than another. Regression says that the wider petal is estimated to be ____________ cm longer than the other.

unanswered

Answer 18

The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points.

For about 95% of the students, the regression estimate of final score based on midterm score is correct to within ___________ points.

Answer 19

can any one pls ans the above questions

Answer 20

6B : 1.5-1.8/0.2=-1.2
-1.2*0.25+3.1 =2.8
Ans :2.8

Answer 21

Find the regression estimate of the length of a petal that is 1.5 cm wide.
1.5-1.8/0.2=-1.2
-1.2*0.25+3.1 =2.8
Ans :2.8

Answer 22

have u done with other questions ,if so can u post the answers

Answer 23

can u please post the answers for other above questions

Answer 24

The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points.

For about 95% of the students, the regression estimate of final score based on midterm score is correct to within ___________ points.

Answer 25

can any one answer this above question

Answer 26

24.7
find the z score value of the 95% on the applet and multiply it by the 15th point of the 80%

Answer 27

Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recorded times, the height of the bar over the interval “1 hour to 3 hours” is 4% per hour. The height of the bar over the interval “3 hours to 6 hours” is 2% per hour. If the histogram is redrawn with just a single bar over the interval “1 hour to 6 hours”, what should the height of the bar be?

Answer 28

can any one answer the above question

Answer 29

hint: 3-1 = 2*4% =8%
6-3 = 3*2% = 6%
add the two resulting %s and divide by 5 which is (6-1)

whatever u get is the answer, let me know if it helped

Answer 30

6D : -0.125*0.25 + 3.1
6E : -0.125*0.15 + 3.1

Answer 31

can u post the exact answer

Answer 32

(8%+6%)/5 = 2.8

Answer 33

ya fne iam working on that .i wil let u know

Answer 34

Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long? [Do not enter the percent sign.]

Answer 35

can any one answer the above question

Answer 36

The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm.


6c: Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long?

Answer 37

The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 6c: Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long?

Answer 38

6c: Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long?

Answer 39

The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm.


6c: Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long?

Answer 40

The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm.


6c: Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long?

Answer 41

37

Answer 42

6c ans=37