Question

1. A consumer advocacy group published a study of labeling of seafood sold in three U.S. states. The study found that 13 of the 25 "red snapper" packages tested were a different kind of fish. Assume that the study used a simple random sample. Complete parts a through c below.

a) Are the conditions for creating a confidence interval satisfied? Explain.

b) Construct a 95% confidence interval for the proportion of "red snapper" packages that were a different kind of fish.

c) Explain what the confidence interval from part (b) says about "red snapper" sold in these three states. Select the correct choice below and fill in the answer boxes within your choice.

2. An insurance company checks police records on 563 accidents selected at random and notes that teenagers were at the wheel in 88 of them.

-Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.

Answer #1

A consumer advocacy group published a study of labeling of
seafood sold in three U.S. states. The group purchased 227 pieces
of seafood from various kinds of food stores and restaurants in the
three states and genetically compared the pieces to standard gene
fragments that can identify the species. The study found that 13 of
the 23 "red snapper" packages tested were a different kind of
fish. Assume that the study used a simple random sample.
A. Construct a 95%...

A consumer advocacy group published a study of labeling of
seafood sold in three U.S. states. The group purchased 226 pieces
of seafood from various kinds of food stores and restaurants in the
three states and genetically compared the pieces to standard gene
fragments that can identify the species. The study found that 11 of
the 26 "red snapper" packages tested were a different kind of
fish. Assume that the study used a simple random sample. Complete
parts b through...

A consumer advocacy group published a study of labeling of
seafood sold in three U.S. states. The group purchased 203 pieces
of seafood from various kinds of food stores and restaurants in the
three states and genetically compared the pieces to standard gene
fragments that can identify the species. The study found that 13 of
the 28 "red snapper" packages tested were a different kind of
fish. Assume that the study used a simple random sample. Complete
parts a through...

A consumer advocacy group published a study of labeling of
seafood sold in three U.S. states. The group purchased
271
pieces of seafood from various kinds of food stores and
restaurants in the three states and genetically compared the pieces
to standard gene fragments that can identify the species. The study
found that
12
of the
25
"red snapper" packages tested were a different kind of fish.
Assume that the study used a simple random sample. Complete parts a
through...

An insurance company checks police records on 563 accidents
selected at random and notes that teenagers were at the wheel in 98
of them.
Question: Construct the 95% confidence interval for the
percentage of all auto accidents that involve teenage
drivers.
Answer: 95% CI= (____%,____%) (round to 1
decimal as needed.)

An insurance company checks police records of 560 accidents
selected at random and found that teenagers were at the wheel in
18% of them. Construct a 95% confidence interval for the true
percentage of auto accidents that involve teenage drivers.
Interpret your results.

An insurance company checks police records on 573 accidents
selected at random and notes that teenagers were at the wheel in 91
of them. Complete parts a) through d).
a) Construct the 95% confidence interval for the percentage of
all auto accidents that involve teenage drivers

An insurance company checks police records on 596 accidents
selected at random and notes that teenagers were at the wheel at 87
of them. if we want to construct a 95% confidence interval for the
proportion of all auto accidents that involve teenage drivers, what
would be the standard error of the sample proportion of
successes?

An insurance company checks police records on 573 accidents
selected at random and notes that teenagers were at the wheel in 83
of them. Complete parts a) through d).
a) Construct the 95% confidence interval for the percentage of
all auto accidents that involve teenage drivers.
95%
CIequals=left parenthesis nothing % comma nothing % right
parenthesis%,%
(Round to one decimal place as needed.)

An insurance company checks police records on 562 accidents
selected at random and notes that teenagers were at the wheel in 81
of them. Complete parts a) through d).
a) Construct the 95% confidence interval for the
percentage of all auto accidents that involve teenage
drivers.
95% CI = ( ___________ %, _________ % )
(Round to one decimal place as needed.)
b) Explain what your interval means.
We are 95% confident that a randomly sampled accident would
involve a...

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