Question
In: Math
Dr. Smile is interested in evaluating whether 7-year-old autistic children differ from the general population of...
Dr. Smile is interested in evaluating whether 7-year-old autistic children differ from the general population of 7-year-old children in their ability to recognize facial expressions. She develops the Facial Recognition Test, which has mean = 200 among the general population of 7-year-olds. Dr. Smile collects data on a sample of 16 children with autism. In this sample Xbar = 180 and s = 12.
A) using alpha= 0.05 and a two-tailed test, conduct a one-sample t-test evaluating the null hypothesis.
b) based on these results, should Dr Smile reject or fail to reject the null hypothesis?
c)Report the resukts of the hypothesis test you conducted in part B as if Dr Smile were writing about them in a journal article.
Solutions
milcah answered 1 year agoRelated Solutions
A psychologist is interested in knowing whether adults who were bullied as children differ from the...
A psychologist is interested in knowing whether adults who were
bullied as children differ from the general population in terms of
their empathy for others. On a questionnaire designed to measure
empathy, the mean score for the general population is 80.82. Random
sampling of 76 scores obtained from individuals who were bullied
yielded a mean of 66.42 and a standard deviation of 22.87.
Suppose you want to calculate the 99% confidence interval.
A psychologist is interested in knowing whether adults who were bullied as children differ from the...
A psychologist is interested in knowing whether adults who were
bullied as children differ from the general population in terms of
their empathy for others. On a questionnaire designed to measure
empathy, the mean score for the general population is 30.6. Random
sampling of 25 scores obtained from individuals who were bullied
yielded a sample mean of 39.5 and a sample standard deviation of
6.6.
Test at the .05 level of significance.
Set up the criteria for making a decision....
Dr. Su is interested in whether males and females differ in their verbal ability. She selects...
Dr. Su is interested in whether males and females differ in
their verbal ability. She selects 5 males and 5 females to
participate in her study. She administers everyone a test of verbal
ability (scores ranging between 0-20, higher scores represent
higher ability). Here are the scores Males: 10, 10, 12, 12, 16
Females: 9, 12, 12, 15, 17 Set up non-directional hypotheses for
the independent t-test. Provide the decision rule, illustrating
with a drawing. Conduct an independent t-test, report...
Question Dr. Whistle was interested in evaluating whether her therapy for post-traumatic stress disorder (PTSD) was...
Question
Dr. Whistle was interested in evaluating whether her therapy for
post-traumatic stress disorder (PTSD) was effective for treating a
group of trauma (abuse) survivors. Thirty-eight trauma survivors
received three weeks of therapy and then completed a PTSD scale.
Dr. Whistle’s research hypothesis is that the mean PTSD score for
those receiving the therapy will be less than for the general
population of trauma survivors (μ = 65, σ = 8). Use null hypothesis
testing (all steps) to answer Dr....
In 2020, Dr. Chen’s daughter is 7-year old, and Dr. Chen is planning for his daughter’s...
In 2020, Dr. Chen’s daughter is 7-year old, and Dr. Chen is
planning for his daughter’s college fund. He expects his daughter
to start her college education at the age of 18, which is 11 years
from now. The expected cost of tuition only for a 4-year
college education in 2032 is $94,800 at a public, in-state
university. The college fund is invested to gain investment
returns. Dr. Chen is considering two investment options. The first
is a mutual fund...
Which reflexes are most commonly retained in children with disabilities (different from the general population)?
Which reflexes are most commonly retained in children
with disabilities (different from the general
population)?
We are interested in determining whether husbands differ from their wives on weight loss after taking...
We are interested in determining whether husbands
differ from their wives on weight loss after taking a weight loss
supplement. To evaluate this, we need to conduct a(n):
A. Independent samples t-test (*this was
incorrect*)
B. Dependent samples t-test
C. One sample t-test
D. Any of these would be appropriate
My next best guess would be a one sample t-test but I
am not sure anymore
Psychiatrist, Dr. Susan Beck examined T.D. Chang, 52 year old professor , married with 2 children...
Psychiatrist, Dr. Susan Beck examined T.D. Chang, 52 year old
professor , married with 2 children for only 15 to 20 minutes. Dr.
Brunetti wanted her to tell him how Mr. Chang might respond to the
news that he has prostate cancer. Dr. Brunetti does not want to
tell him what is suspected and what he might have unless it is
absolutely necessary. Dr. Beck disagrees. Should Mr. Chang be
informed of his condition, the possibilities and the reason for...
7. A biologist was interested in determining whether sunflower seedlings treated with an extract from Vincaminor...
7. A biologist was interested in determining whether sunflower
seedlings treated with an extract from Vincaminor roots resulted in
a lower mean height of sunflower seedlings than the standard height
of 15.7 cm. The biologist treated a random sample of n = 33
seedlings with the extract and subsequently obtained the a sample
mean of 15.664 cm and a sample standard deviation of 2.544 cm. Test
the claim that the mean height is less than 15.7 cm. Fill in the...
You are a 35-year-old married individual with 2 children (ages 7 and 9). You are the...
You are a 35-year-old married individual with 2 children (ages 7
and 9). You are the primary source of family income with an annual
income of $80,000. You are considering buying life insurance
policy(s) to make sure, in case of your premature death, that your
spouse has money to survive without you and they are able provide
your children with college tuition needs. You would also like this
policy to provide some form of savings/investment accumulation so
that at some...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Your friend is looking for investors in a risky business venture. To convince you to participate,...
- Suppose you observe the following situation: State of Economy Probability of State Return if State Occurs...
- Merger Analysis TransWorld Communications Inc., a large telecommunications company, is evaluating the possible acquisition of Georgia...
- Journal Entries and Trial Balance Elite Realty acts as an agent in buying, selling, renting, and...
- In racket Assume that the elements of a list are indexed starting with 1. Write a...
- Describe System Development Life Cycle (SDLC) and how it is used.
- What symbolism do you find in the play,Oedipus?
ADVERTISEMENT