Question

Four percent of the tenants in an apartment building live alone. Suppose five tenants are selected randomly. What expression represents P(all live alone)?

Similarly, a survey shows that 60% of the adults floss their teeth every day. In a random sample of 10 adults, what is the probability that exactly 6 floss every day?

Answer #1

^{5} = 0.000001024

2. As per the binomial binomial formula, in a random sample of 10
adults, the probability that exactly 6 adults floss every day
is

^{10}C_{6}* (0.6)^{6}*(0.4)^{4} =
(10*9*8*7)/(4*3*2*1) * 0.046656 * 0.0256 = = 5040/24 * 0.046656 *
0.0256

= 0.250823 .

Thus, the probability that exactly 6 adults floss every day is 0.25
( on rounding off to 2 decimal places).

Eight families live on the
same floor of a building where five own their homes and three of
them rent. If four families are to be randomly chosen without
replacement to form a sample, and if x is a random
variable representing the number of homeowners in the sample,
(a) what are the
possible values of x?
(b) What is the
probability of getting two homeowners in the sample?
(c) What is the probability of getting fewer than two...

There is a 0.9991 probability that a randomly selected
32-year-old male lives through the year. A life insurance company
charges $173 for insuring that the male will live through the
year. If the male does not survive the year, the policy pays out
100,000 as a death benefit. Complete parts (a) through (c)
below.
a. From the perspective of the 32-year-old male, what are the
monetary values corresponding to the two events of surviving the
year and not surviving?The value...

Eighty dash four percent of adults in a certain country believe
that life on other planets is plausible. You randomly select five
adults and ask them whether they believe that life on other planets
is plausible. The random variable represents the number of adults
who believe that life on other planets is plausible.
Find the mean, variance, and standard deviation of the binomial
distribution for the random variable. Interpret the results.
Find the mean of the binomial distribution. (Round to...

Five percent of American truck drivers are women (Statistical
Abstract of the United States, 1997). Suppose 10 truck drivers are
selected randomly to be interviewed about quality of work
conditions. This is a binomial distribution. (Use Minitab. Print
out the Minitab worksheet results and include a picture of that
sheet at the end of the test.)
a. What is the probability that exactly two of the drivers will
be women?
b. What is the probability that none will be women?...

The percent of fat calories that a person in America consumes
each day is normally distributed with a mean of about
45 and a standard deviation of
7.5 . Suppose that one individual is randomly chosen.
Let X= percent of fat calories.
In each appropriate box you are to enter either a rational
number in "p/q" format or a decimal value accurate to the nearest
0.01 .
(.25) X∼ (pick one) UBNE
( , )
.
(.25) The probability that a person consumes...

1. A random number generator is used to select a number from 1
to
500 ?(inclusively).
What is the probability of selecting the number 595
?
What is the probability?
2.Identify the sample space of the probability experiment and
determine the number of outcomes in the sample space.
-Randomly choosing an even number between 10 and 20,
inclusive
The sample space is?
(Use a comma to separate answers)
There are _____ outcomes in the sample space
3. Determine the number...

1.
The National Center for Health Statistics reported that of
every 882 deaths in recent years, 21 resulted from an automobile
accident, 183 from cancer and 306 from heart disease. What is the
probability that a particular death is due to an automobile
accident?
A 21/882 or 0.024
B 510/882 or 0.578
C 21/306 or 0.069
D 183/882 or 0.207
2.
A survey of top executives revealed that 36% of them regularly
read Time magazine, 20% read Newsweek and 41%...

Question 1 2 pts
Let x represent the height of first graders in a class. This
would be considered what type of variable:
Nonsensical
Lagging
Continuous
Discrete
Flag this Question
Question 2 2 pts
Let x represent the height of corn in Oklahoma. This would be
considered what type of variable:
Discrete
Inferential
Distributed
Continuous
Flag this Question
Question 3 2 pts
Consider the following table.
Age Group
Frequency
18-29
9831
30-39
7845
40-49
6869
50-59
6323
60-69
5410
70...

Do the following problems. 1. Each of three barrels from a
manufacturing line are classified as either above (a) or below (b)
the target weight. Provide the ordered sample space. 2. The heat on
each of two soldered parts is measured and labeled as either low
(l), medium (m), or high (h). State the number of elements in the
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The Business Case for Agility
“The battle is not always to the strongest, nor the
race to the swiftest, but that’s the way to bet
’em!” —C. Morgan Cofer
In This Chapter
This chapter discusses the business case for Agility,
presenting six benefits for teams and the enterprise. It also
describes a financial model that shows why incremental development
works.
Takeaways
Agility is not just about the team. There are
product-management, project-management, and technical issues beyond
the team’s control. Lean-Agile provides...

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