Question

in a sample of 167 children selected randomly from one town it is found that 37 ofvthem suffer asthma. at the 0.05 significance level, test the claim that the proportion of all children in the town who suffer from aathma is 11%

Answer #1

In a sample of 160 children selected randomly from one town, it
is found that 40 of them suffer from asthma. At the 0.05
significance level, test the claim that the proportion of all
children in the town who suffer from asthma is 11%.

In a sample of 160 children selected randomly from one town, it
is found that 35 of them
suffer from asthma.
a) Construct a 99% confidence interval.
b) At the 0.05 significance level, test the claim that the
proportion of all children in the town
who suffer from asthma is 11%.

In a sample of 165 children selected randomly from one town, it
is found that 30 of them suffer from asthma. At the 0.05
significance level, do the data provide sufficient evidence to
conclude that the percentage of all children in the town who suffer
from asthma is different from 11%?

In a sample of 160 children selected randomly from one town, it
is found that 32 of them
suffer from asthma. At the 0.05 significance level, suppose we want
to test if these data
provide sufficient evidence to conclude the proportion of all
children in the town who
suffer from asthma is different from 14%?
A. State the null and alternative hypotheses.
(b) Based on the sample information, calculate the test
statistic.
(c) Find the P-value.
(d) Test the hypothesis...

In a sample of 165 children selected randomly from one town, it
is found that 30 of them suffer from asthma. At the 0.05
significance level, do the data provide sufficient evidence to
conclude that the percentage of all children in the town who suffer
from asthma is different from 11%? Use the P-value approach.
a) State the null and alternative hypotheses symbolically.
b) Which test procedure is appropriate to perform the required
hypothesis test? Please check the assumptions.
c)...

Flu Season: In a sample of 76 adults selected randomly from one
town, it is found that 12 of them have been exposed to a particular
strain of the flu. Find the P-value for a test to reject the claim
that the proportion of all adults in the town that have been
exposed to this strain of the flu is 8%.

Of 147 adults selected randomly in one town, it was found that
31 of them smoke. What is the 95% confidence interval for the
proportion of people in this town who smoke.

In a sample of 47 adults selected randomly from church hill, it
is found that 9 of them have been exposed to the flu this year test
the claim that the proportion of all adults in church hill that
have been exposed to the flu this year is more than 10% use
A=0.1
A)claim, null hypo, alternative hypo
B) test to be used, what is the p-value
C) Classical approach test statistic, and the critical
value?
E) What is the...

. Of 104 adults selected randomly from one town, 76 have health
insurance.
a. Find a 95% confidence interval for the true proportion of all
adults in the town who have health insurance. (Do this by hand and
show all calculations. You can use StatCrunch to check.)
b. Interpret your confidence interval in the context of the
problem.
c. What is the margin of error?

One study, based on responses from 1,018 randomly selected
teenagers, concluded that 41% of teenagers cite grades as their
greatest source of pressure. Use a 0.05 significance level to test
the claim that fewer than half of all teenagers in the population
feel that grades are their greatest source of pressure.
Formulate null and alternative hypothesis
Find the test statistic
Find the p-value for the found test statistic
State the conclusion

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