Question

You can draw **either 10 times or 100 times** at
random with replacement from the box [−1 1]. How many times should
you draw?

(a) To win $1 when the sum is 5 or more, and nothing otherwise?

(b) To win $1 when the sum is −5 or less, and nothing otherwise?

(c) To win $1 when the sum is between −5 and 5, and nothing otherwise?

Answer #1

One hundred draws will be made at random with replacement from
the box with the following numbers: 1 6 7 9 9 10 What is the
expected value of a sum of 100 draws from this box?
Using the same box of numbers described above, what is the
standard error of a sum of 100 draws from this box?
Using the same box of numbers described above, what is the
chance of getting a sum between 650 and 750?

Make a box model for the following problem:
You roll a die 5 times. For each time you roll the die, you win
$5 if you roll a 1. You win $10 if you roll a 2. Otherwise, you
lose $1.

A box contains tickets labeled with the numbers {4, -2, 0, 3,
-5}. In 100 random draws with replacement from the box, the SE of
the sum of just the negative numbers on the tickets drawn is
closest to:
answer: 10 x 1.959
can someone please show how to get this answer + explain step by
step

3. Four hundred tickets are drawn at random with replacement
from the box [0,0,0,1,2,3]
a) What is the expected value of the sum of the draws?
b) What is the standard error for the sum of the draws?
c) What is the probability that the average of
the draws is more than 1.075?

One hundred draws will be made at random with replacement from
the box
[1 6 7 9 9 10]
a) Find the expected value and the standard error for the
percentage of tickets marked by
“9” in 100 draws. Make a box model.
b) What is the chance that the percentage of
tickets marked by “9” is less than 40%
?
Show work using the normal curve.

900 draws will be made at random with replacement from the box
[2 4 6 8]. Estimate the chance that the sum of the draws will be
more than 4,600. (Round two decimals)

1.) If you draw four cards at random from a deck
(without replacement), what is the probability that you will draw
four number cards?
(Number card = card whose value is 2-10, so neither a
face card nor an ace)
.142
.218
.229
.230
.308
None of the above

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Construct a confidence interval for the population variance sigma
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level of confidence. Assume the sample is from a normally
distributed population. What is the confidence interval for the
population variance sigma squared? ( nothing, nothing) (Round
to one decimal place as needed.) Interpret the results. Select...

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diamonds.
a) Create a PDF for a variable X, which represents the amount of
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b) What is the...

a)There are 15 broken light bulbs in a box of 100 light bulbs. A
random sample of 10 bulbs is chosen without replacement. What is
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b)A car repair can be performed either on time or late, and
either satisfactorily or unsatisfactorily. The probability of a
repair being on time and satisfactory is 0.26. The probability of a
repair being on time is 0.74. The probability of a repair being
satisfactory...

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