For 10-13, suppose the mean of the scores on an exam given to all tenth
graders at a school is 82.4 with a standard
deviation of 18.3. A random sample of 20
of the scores is chosen. Round answers to
the nearest tenth.
10. What interval captures 68% of the means
for random samples of 20 scores?
11. What is the probability that the sample
has a mean score of at most 75?
12 What is the probability that the sample
has a mean score of at most 85?
13. What is the probability that the sample
has a mean score between 73 and 87?
14. The mean time that students at a school
take to complete a test is 97 4 minutes
with a standard deviation of 14 5 minutes
A random sample of 25 of the times is
chosen Choose True or False for each
statement about the test.
A The interval 91.6 to 103 2 captures
95% of the means for random
samples of the times
O True False
B The probability that the sample has a
mean time over 100 minutes is
18.5%
O True False
C The probability that the sample has a
mean time at least 95 minutes is
16.6%
True False

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all