Question

Assume that

31.4%

of people have sleepwalked. Assume that in a random sample of

1491

adults,

477

have sleepwalked.a. Assuming that the rate of

31.4%

is correct, find the probability that

477

or more of the

1491

adults have sleepwalked.b. Is that result of

477

or more significantly high?c. What does the result suggest about the rate of

31.4%?

a. Assuming that the rate of

31.4%

is correct, the probability that

477

or more of the

1491

adults have sleepwalked is

nothing.

(Round to four decimal places as needed.)

b. Is that result of

477

or more significantly high?

▼

Yes,

No,

because the probability of this event is

▼

greater

less

than the probability cutoff that corresponds to a significant event, which is

▼

0.5.

0.05.

0.95.

c. What does the result suggest about the rate of

31.4%?

A.Since the result of

477

adults that have sleepwalked

is not

significantly high, it

is not

strong evidence against the assumed rate of

31.4%.

B.Since the result of

477

adults that have sleepwalked

is

significantly high, it

is not

strong evidence against the assumed rate of

31.4%.

C.Since the result of

477

adults that have sleepwalked

is not

significantly high, it

is

strong evidence against the assumed rate of

31.4%.

D.

The results do not indicate anything about the scientist's assumption.

E.Since the result of

477

adults that have sleepwalked

is

significantly high, it

is

strong evidence against the assumed rate of

31.4%.

F.Since the result of

477

adults that have sleepwalked

is not

significantly high, it

is not

strong evidence supporting the assumed rate of

31.4%.

Answer #1

Assume that 30.3% of people have sleepwalked. Assume that in a
random sample of 1549 adults, 509 have sleepwalked.
a. Assuming that the rate of 30.3% is correct, find the
probability that 509 or more of the 1549 adults have
sleepwalked.
b. Is that result of 509 or more significantly high?
c. What does the result suggest about the rate of 30.3%?

Assume that 30.8% of people have sleepwalked. Assume that in a
random sample of 1477 adults, 476 have sleepwalked. a. Assuming
that the rate of 30.8% is correct, find the probability that 476
or more of the 1477 adults have sleepwalked. b. Is that result of
476 or more significantly high? c. What does the result suggest
about the rate of 30.8%?

When a scientist conducted a genetics experiments with peas,
one sample of offspring consisted of 953 peas, with 723 of them
having red flowers. If we assume, as the scientist did, that
under these circumstances, there is a 3 divided by 4 probability
that a pea will have a red flower, we would expect that 714.75
(or about 715) of the peas would have red flowers, so the result
of 723 peas with red flowers is more than expected. a....

When a scientist conducted a genetics experiments with peas,
one sample of offspring consisted of
925
peas, with
701
of them having red flowers. If we assume, as the scientist
did, that under these circumstances, there is a
3 divided by 43/4
probability that a pea will have a red flower, we would expect
that
693.75
(or about
694)
of the peas would have red flowers, so the result of
701
peas with red flowers is more than expected.
a....

When a scientist conducted a genetics experiments with peas,
one sample of offspring consisted of 949 peas, with 716 of them
having red flowers. If we assume, as the scientist did, that
under these circumstances, there is a 3 divided by 4 probability
that a pea will have a red flower, we would expect that 711.75
(or about 712) of the peas would have red flowers, so the result
of 716 peas with red flowers is more than expected. a....

When a scientist conducted a genetics experiments with peas,
one sample of offspring consisted of
951951
peas, with
741741
of them having red flowers. If we assume, as the scientist
did, that under these circumstances, there is a
3 divided by 43/4
probability that a pea will have a red flower, we would expect
that
713.25713.25
(or about
713713)
of the peas would have red flowers, so the result of
741741
peas with red flowers is more than expected.
a....

When a scientist conducted a genetics experiments with peas,
one sample of offspring consisted of 915 peas, with 715 of them
having red flowers. If we assume, as the scientist did, that
under these circumstances, there is a 3 divided by 43/4
probability that a pea will have a red flower, we would expect
that 686.25 (or about 686) of the peas would have red flowers, so
the result of 715 peas with red flowers is more than expected.
a....

5.1 12
The accompanying table describes the random variable x, the
numbers of adults in groups of five who reported sleepwalking.
Complete parts (a) through (d) below.
x P(x)
0
0.169
1
0.361
2
0.319
3
0.119
4
0.027
5
0.005
A.
Find the probability of getting exactly 4 sleepwalkers among 5
adults.
(Type an integer or a decimal. Do not round.)
B. Find the probability of getting 4 or more
sleepwalkers among 5 adults.
(Type an integer or a...

1)Assume that when adults with smartphones are randomly
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The probability is
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Determine whether or not the procedure described below results
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FourFour
hundred different voters in a region with two...

Among a simple random sample of 318 American adults who do not
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could not afford school. Round answers to 4 decimal places.
1. A newspaper article states that only a minority of the Americans
who decide not to go to college do so because they cannot afford it
and uses the point estimate from this survey as...

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