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Hypothesis Testing
Page 7
Questions (2,043)
Assume the z test statistic equals 0.99, find the the p-value if Ha:p> 0.50
3 answers
asked by
Timothy
662 views
In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April,
4 answers
asked by
Vanessa
4,356 views
Henry performed a two- tailed test for an experiment in which N = 24. He could not find his table of t critical values, but he
2 answers
asked by
adrienne
1,112 views
At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical
3 answers
asked by
Mia
966 views
The mean lifetime of a sample of 100 light tubes is 1570 hours with a standard deviation of 80 hours test the hypothesis that
3 answers
asked by
Patrick
1,281 views
A hotel chain is interested in evaluating processes. Guests can reserve a room by using either a telephone system or an online
3 answers
asked by
Alvin
971 views
A researcher is testing the effect of a new cold and flu medication on mental alertness. A sample of n=9 college students is
3 answers
asked by
ed
1,211 views
for a hypothesis comparing two population means, what is the critical value for a one-tailed hypothesis test, using a 5percent
3 answers
asked by
marsha
717 views
Find the P-value for a left tailed hypothesis test with a test statistic of z= -1.77. Decide wether to reject the null if the
2 answers
asked by
Christina
1,379 views
Suppose a manufacturer claims that each family-size bag of pretzels sold weighs 12 ounces on average with a standard deviation
3 answers
asked by
Ana
1,017 views
Needing help to get this answer right.
_c___ 3. What is the relationship between the alpha level, the size of the critical
4 answers
asked by
Lyn
827 views
What is the consequence of a Type II error?
a. concluding that a treatment has an effect when it really does b. concluding that a
3 answers
asked by
Lyndyc
1,758 views
Cinemark Theaters knows that a certain hit movie ran an average of 84 days in each city, and the corresponding standard
4 answers
asked by
lea
597 views
You randomly choose 16 unfurnished one-bedroom apartments from a large number of advertisements in your local newspaper. You
3 answers
asked by
arshi
1,361 views
A group of 49 randomly selected construction workers has a mean age of 22.4 years with a standard deviation of 3.8. According to
3 answers
asked by
Cheryl
2,007 views
given the following p values which would be considered more significant?
a) p ≤ 0.3 b) p ≤ 0.02 c) p ≤ 0.25
3 answers
asked by
Anonymous
452 views
State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims.
< ¡Ü = ¡Ù ¡Ý >
3 answers
asked by
Karly
588 views
Which of the following is not an assumption or condition that needs to be checked for the one-proportion z-interval?
A)
3 answers
asked by
Nick
651 views
In 2006, 75.9% of first-year students said they used the Internet for research or homework. Administrators found that 168 of an
4 answers
asked by
Dora
1,735 views
The following table gives the number of deaths due to accidental falls for each month during 1970. Is there any evidence for a
2 answers
asked by
Joy
755 views
A study was conducted to examine the peer review process. The investigators hypothesized that reviewers suggested by authors
3 answers
asked by
Susie
1,576 views
I am having a bit of trouble with the top half of the questions. I have an answer below for questions 5-10, is there anyway you
3 answers
asked by
penelope
1,103 views
Miller (2008) examined the energy drink consumption of college undergraduates and found that males use energy drinks
3 answers
asked by
Janice
1,364 views
How do you find the p-value, on a problem like below.
The corrosive effects of various soils on coated and uncoated steel pipe
4 answers
asked by
Tracy
422 views
Complete the hypothesis test with alternative hypothesis ƒÊd �‚ 0 based on the paired data that follows and d = O - Y. Use
7 answers
asked by
Tracy 10
422 views
A study of 420,048 cell phone users found that 135 of them developed cancer of the brain or nervous system. prior to this study
3 answers
asked by
Rob
2,574 views
Based on information from Harper's Index, 37 out of a random sample of 100 adult Americans who did not attend college believe in
3 answers
asked by
Torri
3,326 views
how can I decide to reject or fail to reject the following null hypothesis? let a= 0.05,data; p=0.69, n=32, test statistic z=
3 answers
asked by
Carl
372 views
A manufacturer is interested in determining whether it can claim that the boxes of detergent it sells contain, on average, more
3 answers
asked by
AV
1,240 views
Cushman and Wakefield accounting that the average annual rent for office space in Tampa was $17.63 per square foot. A real
2 answers
asked by
chris
905 views
Exercise :
A machine is set up such that the average content of juice per bottle equals μ . A sample of 36 bottles yeilds an
3 answers
asked by
yao
574 views
the process that produces sonora bars a type of candy is intended to pduce bars with a mean weight of 56 gm. The process
3 answers
asked by
christopher
1,097 views
To determine the relative effectiveness of different study strategies for the SAT, suppose three groups of students are randomly
4 answers
asked by
Anonymous
1,769 views
For an independent-measures ANOVA comparing three treatments with a sample of
n = 5 in each treatment, what is the critical value
3 answers
asked by
Robbie
3,526 views
A researcher administered a treatment to a sample of participants selected from a population
of 80. If the researcher obtains a
3 answers
asked by
Robbie
918 views
How do you calculate the degrees of freedom for unequal sample sizes and unequal variance (independent t test)
3 answers
asked by
maddy
899 views
a manufacturer of bicycle tire has developed a new system which he claims an average life span of 5 years. with the standard
4 answers
asked by
jericho
1,996 views
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60
3 answers
asked by
StudentD
2,456 views
A researcher wants to carry out a hypothesis test involving the mean for a sample
of n = 20. While the true value of the
3 answers
asked by
Anonymous
855 views
. A random sample of 30 students obtained the following marks in a class test : (20)
Test the hypothesis that their median score
3 answers
asked by
pushpa
672 views
How long does it take to have food delivered? A Chinese restaurant advertises that the mean delivery will be no more than 30`
3 answers
asked by
Jasmine
1,566 views
The data was obtained from car crash experiments. The table values are the chest deceleration data (g) for the dummy in the
3 answers
asked by
EXHAUSTED ON MATH
621 views
10.51 A statistics professor compared the scores of her morning class and afternoon class on the same
quiz. The 42 morning
3 answers
asked by
cindy
1,250 views
Determine the upper-tail critical values of F in each of the following two-tail tests:
Á) á= 0.10, n1 = 16,n2 = 21 B) á =
3 answers
asked by
Marge
819 views
TABLE 1
The general manager of a chain of pharmaceutical stores reported the results of a regression analysis, designed to
4 answers
asked by
Maggie
1,652 views
A computer manufacturer is about to unveil a new, faster personal computer. The new machine clearly is faster, but initial tests
2 answers
asked by
Anonymous
585 views
The mean serum cholesterol level in the population of males who do not develop heart disease is known to be 219 mg/100 ml.
4 answers
asked by
Mack
771 views
The average math SAT score is 500 with a standard deviation of 100. A particular high school claims that its students have
3 answers
asked by
Nancy
1,693 views
A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. State the
4 answers
asked by
julie
1,868 views
Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of
3 answers
asked by
Anonymous 1
636 views
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