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Hypothesis Testing
Page 9
Questions (2,043)
The following regression equation for quantity supplied was estimated
using a sample of fiftyobservations. Q= 2.2 + 0.104P. (3.4)
1 answer
asked by
Evaristi Paulo
120 views
A manufacture of sports equipment has developed a new synthetic fishing line that he claims has a mean breaking strength of 8kg
1 answer
asked by
Daniel Alemu
79 views
The weight of adults in a certain city has a mean of 130Ibs,with standard deviation of 41Ibs,as sample of 25 adults living in
1 answer
asked by
Daniel Alemu
112 views
d) In order to examine whether the socio - economic levels of families have an impact on the development of children, the height
1 answer
asked by
vcadn
96 views
a) A video producer wants to determine whether the 2 types of microelectronic circuits it uses have the same flow rates. The
1 answer
asked by
vcadn
62 views
c) In order to investigate the effect of gender on the birth weight of the baby, birth weight information of 56 babies was
1 answer
asked by
Yeniceli
161 views
a) A video producer wants to determine whether the 2 types of microelectronic circuits it uses have the same flow rates. The
1 answer
asked by
vcadn
70 views
For each conjecture, state the null and alternative hypothesis.
1 answer
asked by
Nora
87 views
Determine the critical values(s) for a two tailed test of a population mean at the a=0.10 level of significance based on a
1 answer
asked by
Wanda
130 views
An aquarium reports that guestsmean visit time is 134 minutes. Benjamin, a dolphin trainer at the aquarium, believes the mean
1 answer
asked by
Sweet pea
138 views
Which of the following is true? Mark all that apply.
A. a hypothesis can be proved incorrect through experiment B. conclusions
4 answers
asked by
Amber
1,484 views
How many work cycles should be timed to estimate the average cycle time to within 2 percent of the sample mean with a confidence
1 answer
asked by
Anonymous
92 views
The average length of time for students to register for summer classes at a certain college has been 50 minutes. A new
1 answer
asked by
Anonymous
349 views
Find the p-value of the test
H0 : μ = 100 when Hα : μ > 100 and z = 2.17 A. .0251 B. .0150 C. .0199 D. .0193
2 answers
asked by
gaby24
172 views
Test the (null) hypothesis, at 5% level of significance, that the population proportion of students speaking English is no less
1 answer
asked by
Gurpinder
223 views
Test the (null) hypothesis, at 5% level of significance, that the population proportion of students speaking English is 55%.
1 answer
asked by
Gurpinder
282 views
Test the ( null) hypothesis, at 5% level of significance, that the population mean age of students is 45 years. Show your work.
1 answer
asked by
Gurpinder
219 views
Hypothesis testing in the geography
1 answer
asked by
Sinoxolo
158 views
A certain band of apple juice is supposed to have 64 ounces
of juice. The company's target mean is 64.05 ounces of juice to avoid
1 answer
asked by
m
246 views
The weight of adults in a certain city has a mean of 130 lbs, with a standard deviation of 41 lbs. A sample of 25 adults living
1 answer
asked by
Mamaru
360 views
Submit your presentation. In a paragraph of 150 words or more, describe how you could use research and use the scientific method
3 answers
asked by
kylepalmer
666 views
A brand of powdered milk is advertised as having a net weight of 150 grams. A curious consumer obtained the net weight of 10
3 answers
asked by
zee
1,360 views
The one-sample t-statistic for a test of H_0 : \mu = 42 versus H_1 :\mu < 42 based on n = 15 observations has the
value t =
1 answer
asked by
Sam
405 views
A study investigated whether injecting mice with a certain hormone would affect the time it takes them to learn a task. Learning
2 answers
asked by
Sara
582 views
Explain why using the t statistic may be an appropriate alternative to using a z-score (use the concept of estimated standard
1 answer
asked by
layla
474 views
If alpha is changed from .05 to .01, it is easier or harder to make a Type I Error?
2 answers
asked by
Cookie
1,011 views
A statistician performed a χ2 test and obtained a p-value of 0.005. Interpret this result
1 answer
asked by
abs
423 views
A marriage counselor conducted a study of couples, categorizing each of the couples as "communicative" or "non-communicative."
2 answers
asked by
gloria
1,052 views
I have tried to find the p value and z statitcs for each of the firms below and I am so confused becuase my answers arent making
1 answer
asked by
Maya
601 views
My hypothesis test is a lower tail test. and this is the data i developed for my p values and z statistics and I have a feeling
2 answers
asked by
Maya
616 views
A manufacturing company produces lenses for digital cameras. The defect rate for each lense is 9%. Which of the following
1 answer
asked by
Macy
442 views
Consumers own laptops of brand X for a certain amount of time before buying a new model. This time duration has a distribution
1 answer
asked by
Kim
383 views
a)The blank is the probability of erroneously rejecting the null hypothesis.I said level of significance, is that correct?
b)If
2 answers
asked by
Labub
913 views
consider b1=100 and b0=5, this gives us the estimated regression equation of y=100x+5
Find the estimated standard deviation of b1
2 answers
asked by
Jordon
529 views
Is the chi squared test used for continuous/discontinuous data? I think its continuous.
3 answers
asked by
Anonymous
638 views
Consider the following data:
23 17 20 29 21 14 19 24 Develop and test a hypothesis to determine if the variance is greater than
1 answer
asked by
Anonymous
351 views
1.
The following sample data shows the use of plastic (debit and credit) cards versus cash/cheque by four age groups: Age Group
1 answer
asked by
Anonymous
446 views
Consider the following data:
23 17 20 29 21 14 19 24 Develop and test a hypothesis to determine if the variance is greater than
1 answer
asked by
Anonymous
342 views
1.
The following sample data shows the use of plastic (debit and credit) cards versus cash/cheque by four age groups: Age Group
1 answer
asked by
Raye
449 views
1. At the national level, the average income for a given occupation is $74 914. You want to determine if the income for member
2 answers
asked by
Porsha
488 views
A study was made of 413 children who were hospitalized as a result of motor vehicle crashes. Among 290 children who were not
1 answer
asked by
josh
592 views
test the claim, identify null hypothesis, alternative hypothesis, test statistic, p-value and critical values, and conclusion
The
1 answer
asked by
josh
819 views
Which of the following is NOT a way to test your hypothesis?
A.) observe the natural world. B.) make a guess.*** C.) perform an
1 answer
asked by
Mr. Sue
412 views
The proportion of deaths due to lung cancer in males ages 15-64 in England and Wales during the period 1970-1972 was 12%.
1 answer
asked by
maria
965 views
The proportion of deaths due to lung cancer in males ages 15-64 in England and Wales during the period 1970-1972 was 12%.
1 answer
asked by
maria
718 views
A bank wonders whether omitting the annual credit card fee for customers who charge ar least $3000 in a year will increase the
1 answer
asked by
Nin
919 views
Although there is a popular belief that herbal remedies such as Ginkgo biloba and Ginseng may improve learning and memory in
2 answers
asked by
andy
950 views
We have two coins, C0 and C1, that looks identical but have different probabilities
(0.5 and 0.7 respectively) of showing Heads.
1 answer
asked by
Anonymous
440 views
A survey of Internet users reported that 20% downloaded music onto their computers. The filing of lawsuits by the recording
2 answers
asked by
YOMO
636 views
According to a June 2009 report, 68% of people with “green” jobs in North America felt that they had job security, whereas
2 answers
asked by
ayno
695 views
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