Question

A survey showed that among 785 randomly selected subjects who completed four years of college, 144 of them are smokers. Use a 0.01 significance level to test the claim that the rate of smoking among those with four years of college is less than the 27% rate for the general population.

Answer #1

A recent survey of 200 randomly selected households showed that
8 had a single male as the head of household. Forty years ago, a
survey of 200 randomly selected households showed that 6 had a
single male as the head of household. Use a 0.05 significance level
to test the claim that the proportion has changed. Find the
P-value.

In a survey of randomly selected subjects, the mean age of 40
respondents is 36.4 years, and the sample standard deviation of all
ages is known to be 10.1 years. Construct a 95% confidence interval
estimate of the mean age of the population from which the sample
was selected.

In a survey, 500 men and 500 women were randomly selected. Among
the men, 52 had been ticketed for speeding within the last year,
whereas 27 of the women had been ticketed for speeding during the
same period (based on data from R. H. Bruskin Associates).
(a) At the 0.01 significance level, test the claim that women
have lower rate of speeding tickets.
Original claim is made by the Answer hypothesis.
Original claim is: pwomen - pmenAnswer
0.
Test statistic:...

Among drivers who have had a car crash in the last year, 250
were randomly selected and categorized by age, with the results
listed in the table below.
Age
Under 25
25-44
45-64
Over 64
Drivers
97
62
38
53
If all ages have the same crash rate, we would expect (because
of the age distribution of licensed drivers) the given categories
to have 16%, 44%, 27%, 13% of the subjects, respectively. At the
0.025 significance level, test the claim...

Among 2200 randomly selected adult male passengers 1884 wear
seat belts. Among 2280 randomly selected adult female passengers
1999 wear seat belts. Use a 0.05 significance level to test the
claim that the rate of male passengers who wear seat belts is lower
than the rate of female passengers who wear seat belts.
H0: p1____p2 For Q35 (circle one: equal to, less than, greater
than, not equal to)
H1: p1____ p2 For Q36 (circle one: equal to, less than, greater...

A survey of 1,570 randomly selected adults showed that 541 of
them have heard of a new electronic reader. The accompanying
technology display results from a test of the claim that 34% of
adults have heard of the new electronic reader. Use the normal
distribution as an approximation to the binomial distribution, and
assume a 0.01 significance level to complete parts (a) through
(e).
a. Is the test two-tailed, left-tailed, or right-tailed?
Right tailed test
Left-tailed test
Two-tailed test
b....

1. In a Pew Research Center poll of 745
randomly selected adults, 589 said that it is morally wrong to not
report all income on tax returns. Use a 0.01 significance level to
test the claim that
75% of adults say that it is morally wrong to not
report all income on tax returns.
2. The Hawk-Eye electronic system is used in
tennis for displaying an instant replay that shows whether a ball
is in bounds or out of bounds....

In a survey of
one hundred and eight five
females who recently completed high school,
eighty percent
were enrolled in college. In a survey of
one hundred and fifty
males who recently completed high school,
sixty eight percent
were enrolled in college. At
α=0.07,
can you reject the claim that there is no difference in the
proportion of college enrollees between the two groups? Assume the
random samples are independent. Complete parts (a) through
(e).
(a) Identify the claim and...

BIOS 376 Homework 7
1. A professor claims that the mean IQ for college students is
92. He collects a random sample of 85 college students to test this
claim and the mean IQ from the sample is 84.
(a) What are the null and alternative hypotheses to test the
initial claim? (1 pt)
(b) Using R, compute the test statistic. Assume the population
standard deviation of IQ scores for college students is 17.6
points. (1 pt)
(c) Using R,...

A poll of 2,061 randomly selected adults showed that 97% of them
own cell phones. The technology display below results from a test
of the claim that 94% of adults own cell phones. Use the normal
distribution as an approximation to the binomial distribution, and
assume a 0.01 significance level to complete parts (a) through (e).
Show your work. ***Correct answers are in BOLD (how do we
get those answers)
Test of p=0.94 vs p≠0.94
X= 1989, N= 2061, Sample...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 9 minutes ago

asked 9 minutes ago

asked 9 minutes ago

asked 14 minutes ago

asked 15 minutes ago

asked 27 minutes ago

asked 28 minutes ago

asked 28 minutes ago

asked 29 minutes ago

asked 34 minutes ago

asked 34 minutes ago