Question

In a study, there were 387 children out of 32,637 who were diagnosed with Autism Spectrum Disorder. Nationally, about 1 in 85 children are diagnosed with ASD. Is there sufficient data to show that the incidence of ASD is more in the study than nationally? Test at the 5% level.

1) State the hypotheses. Round proportions to two decimal
places.

*H*_{0}:

*H _{a}*:

2)Calculate the test statistic. Round to four decimal
places.

*p̂* =

3)Calculate the standardized test statistic. Round to three
decimal places.

*z* =

4) Find the p-value. Round to four decimal places.

p-value =

5) State your decision.

a) Since the p-value is less than .05, fail to reject
*H*_{0}.

b) Since the p-value is less than .05, reject
*H*_{0}.

c) Since the p-value is greater than .05, fail to reject
*H*_{0}.

d) Since the p-value is greater than .05, reject
*H*_{0}.

Answer #1

The statistical software output for this problem is:

Hence,

1) Ho: p = 0.01

Ha: p > 0.01

2) Test statistic = 0.0119

3) Standardized test statistic = 0.156

4) p - Value = 0.4381

5) Since the p-value is greater than .05, fail to reject
*H*_{0}.

#6. In 2008, there were 507 children in Arizona out of 32,601
who were diagnosed with Autism Spectrum Disorder (ASD) ("Autism and
developmental," 2008). Find the proportion of children with ASD in
Arizona with a confidence level of 99%.
Blank #1: Report the bounds of the 99%
confidence interval as lower bound,upper bound with commas in
between and no additional spaces. Report bounds to three decimal
places. So, in context, 99% confident that the true proportion of
children with ASD...

Are there more children diagnosed with Autism Spectrum Disorder
(ASD) in states that have larger urban areas over states that are
mostly rural? In the state of Pennsylvania, a fairly urban state,
there are 245 eight year olds diagnosed with ASD out of 18,440
eight year olds evaluated. In the state of Utah, a fairly rural
state, there are 45 eight year olds diagnosed with ASD out of 2,123
eight year olds evaluated ("Autism and developmental," 2008). Is
there enough...

Question: In 2008, there were 507 children in Arizona out of
32,601 who were diagnosed with Autism Spectrum Disorder (ASD)
("Autism and developmental," 2008). Nationally 1 in 88 children are
diagnosed with ASD ("CDC features -," 2013). Is there sufficient
data to show that the incident of ASD is more in Arizona than
nationally? Test at the 2% level.
(i) Which of the following statements correctly defines the null
hypothesis HO?
A. p = 0.011 B. μ = 507 C....

Are there more children diagnosed with Autism Spectrum Disorder
(ASD) in states that have larger urban areas over states that are
mostly rural? In the state of Pennsylvania, a fairly urban state,
there are 245 eight year olds diagnosed with ASD out of 18,440
eight year olds evaluated. In the state of Utah, a fairly rural
state, there are 45 eight year olds diagnosed with ASD out of 2,123
eight year olds evaluated ("Autism and developmental," 2008). Is
there enough...

Are there more children diagnosed with Autism Spectrum Disorder
(ASD) in states that have larger urban areas over states that are
mostly rural? In the state of Pennsylvania, a fairly
urban state, there are 245 eight year olds diagnosed with ASD out
of 18,440 eight year olds evaluated. In the state of
Utah, a fairly rural state, there are 45 eight year olds diagnosed
with ASD out of 2,123 eight year olds evaluated ("Autism and
developmental," 2008). Is there enough evidence to show...

Are there more children diagnosed with Autism Spectrum Disorder
(ASD) in states that have larger urban areas over states that are
mostly rural? In the state of Pennsylvania, a fairly urban state,
there are 245 eight year olds diagnosed with ASD out of 18,440
eight year olds evaluated. In the state of Utah a fairly rural
state, there are 45 eight year olds diagnosed with ASD out of 2,123
eight year olds evaluated ("Autism and developmental," 2008). Is
there enough...

Please show your work
9.1.5 Are there more children diagnosed with Autism Spectrum
Disorder (ASD) in states that have larger urban areas over states
that are mostly rural? In the state of Pennsylvania, a fairly urban
state, there are 245 eight year olds diagnosed with ASD out of
18,440 eight year olds evaluated. In the state of Utah, a fairly
rural state, there are 45 eight year olds diagnosed with ASD out of
2,123 eight year olds evaluated ("Autism and...

Are there less children diagnosed with Autism Spectrum Disorder
(ASD) in states that have larger urban areas over states that are
mostly rural? Assume data were collected from a fairly urban state
and they found 226 eight-year olds diagnosed with ASD out of 19278
eight-year olds evaluated. Assume data were then collected for a
fairly rural state and they found 60 eight-year olds diagnosed with
ASD out of 2614 eight-year olds evaluated. Is there enough evidence
to show that the...

Question 2 options: Are there more children diagnosed with
Autism Spectrum Disorder (ASD) in states that have larger urban
areas over states that are mostly rural? In the state of
Pennsylvania, a fairly urban state, there are 245 eight year olds
diagnosed with ASD out of 18,440 eight year olds evaluated. In the
state of Utah, a fairly rural state, there are 45 eight year olds
diagnosed with ASD out of 2,123 eight year olds evaluated ("Autism
and developmental," 2008)....

6.34 Prenatal vitamins and Autism: Researchers
studying the link between prenatal vitamin use and autism surveyed
the mothers of a random sample of children aged 24 - 60 months with
autism and conducted another separate random sample for children
with typical development. The table below shows the number of
mothers in each group who did and did not use prenatal vitamins
during the three months before pregnancy (periconceptional period).
(Schmidt, 2011)
Autism
Typical Development
Total
No vitamin
111
70
181...

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