science
posted by stat .
A coin will be tossed 15 times, and I have to decide whether it lands heads with chance 0.6 or 0.3. I’ll test the hypotheses
Null: p = 0.6
Alternative: p = 0.3
1.
First, I will use a simple decision rule: if fewer than half the tosses are heads, I will choose p=0.3; if more than half the tosses are heads, I will choose p=0.6.
The significance level of this test is ____________%.
2.
The power of the test in Problem 3 is ____________%.
3.
Suppose I want to create a new decision rule that says, “If the number of heads is less than H, then I will choose p=0.3; otherwise I will choose p=0.6.” Here H is an integer in the range 0 through 15. Is it possible for me to choose H so that the new test has a smaller significance level as well as a higher power than the test in Problem 1?
Maybe; there is not enough information to decide.
Yes.
No

science 
stat
will be problem 1 is the write in the problem 2

science 
stat
2.
so The power of the test in Problem 1 is ____________%. 
science 
stat001
question# ans#
1 2
2 2
3
4
5 3
6
7
8
9 1
10 4
11 1
12
13 1
14 2
15 3
16 3
17
18
19
20 3
21
22 1
23 3
24 4 
science 
Help
Thanks to stat001,

science 
stat001
GUYS HERE ARE SOME OTHER ANSWERS
Q3 25%
Q4 43%
Q6 29%
Q7 51%
Q8 17% 
science 
argonaft
Q3, Q6, Q7, Q8 are wrong; didn't check Q4
Q6  53.44
Q7  60.56
Q8  93 
science 
Help
thanks argonaft plz do post others if you come up with the answers

science 
joan
any one who knows the answers to these questions 3 4 12 17 18 19 21

science 
argonaft
well the right answers are
Q3 38%
Q4 56%
Q6 478%
Q7 65%
Q8 89% 
science 
Mario007
Argonaft
Something wrong in your 3:14am and 6:46am??? Pls explain
Best 
science 
saprishke
Argonaft your answers are wrong
anyone plz help 
science 
Tuga
Q3  Binomial n=15 p=0.6 X<=7 21.31032%
Q4  Binomial n=15 p=0.3 X<=7 94.99875%
Q6  53.4355%
Q7  60.5645%
Q8  93.15%
Q12  14.26%
Q1719 & 21  Any lights on this?? 
science 
argonaft
the second argonaft is not me...somebody play stupid games!!!

science 
Mario007
OK, sorry, Q1719???
Best 
science 
argonaft
still working on these :)

science 
Mario007
Q17  37.5
Q18  105.375
Q19  35.125
I think this is OK...
Best to all 
science 
anonymous
maria007 q21 plz

science 
Mario007
Did you check Q17to19? And by the way is a male not a female ...... AHAHA
Best 
science 
anonymous
q1719 are correct

science 
argonaft
10x Mario007

science 
Mario007
Now Q21  44.61%
Best 
science 
anonymous
yup q21 is correct

science 
Mario007
I found some errors on the site, that made me get two obvious answers wrong, cause I didn't get a response and then... wrong answer...
Anybody had the same???
Best 
science 
Mario007
With that I got a final 97%, not bad!
Regards to you all..... 
science 
youmustbeproud
you all should be ashamed of your selves

science 
ananymous
Q23  0.75
Q24  0.6 
science 
Tuga
Hi, thanks for help. :)
Can anyone put some explanation about questions 17 to 21... I tried to solve it, but didn't get any results that seemed ok (they all seemed absurd to me)... and all were far from these.
How did you put the tables do calculate? 
science 
Consolidated answers
1.The treatment does something.
2.False
3.21.31
4.94.998
5.No
6.53.435
7.60.564
8.93.15
9.The average blood pressure in the population is 120 mm.
10.t
11.onetailed Status
12.14.26
13.True
14.at all private universities in the state.
15.NA (that is, unknown based on the given information)
16.probability histogram of the average number of hours worked in the week before the survey by a simple random sample of 1000 freshmen taken from private universities in the state
17.37.5
18.105.375
19.35.125
20.chisquare
21.44.61
22.support the statistician’s belief.
23.0.75
24.0.6
Thanks to stat001 and Mario007 
science 
stat001
@Consolidated answers @Mario007 @Tuga
Thank you all..All the best!!!
Just note this I never post wrong answers that second answer thread begin with 'Q3' by this username 'stat001' was not posted by me,I suspect some schizophrenic did that.. 
science 
stat001
hahahahahahahahahah

science 
stat001
sorry guys my bad

science 
STAT
Thank you stat001 I used it just for check up, and it really helps, bnecause its important for me, as for many others. But I would like to say, that the someone who gives wrong answers by your nickname  it's not HE or SHE  IT, IT and even not schizophrenic, because schisophrenic is a person, this one "example"  only IT...

science 
stat001
i posted some wrong answers sorry for that i will not do that again plz show some compassion

science 
stat001
i know who you are stat001 and why you are posting answers i know you completely there is no respect in getting certificates if you don't obey the honor codes
Respond to this Question
Similar Questions

Data Management Help!
A coin was tossed 1000 times in an experiment to decide whether it really had an equal chance of coming up heads or tails. The decision was made in advance to declare the coind NOT FAIR if the observed outcome of the experiment had … 
Data management
A coin was tossed 1000 times in an experiment to decide whether it really had an equal chance of coming up heads or tails. The decision was made in advance to declare the coind NOT FAIR if the observed outcome of the experiment had … 
math
an unbiased coin is tossed 3 times. find the probability that the coin lands heads exactly once. 
CALC
A biased coin whose chance of heads is 0.4 is tossed five times in a row. What is the probability that heads is tossed exactly 2 times? 
Statics
You wish to test whether or not a coin is fair, so you toss it 400 times and obtain 220 heads. Test the null hypothesis that the coin is fair and balanced against the alternative that it is not fair and balanced. Use the 1% significance … 
math
a fair coin is tossed in the air 4 times. if the coin lands heads up the first three tosses, what is the probability the coin will land heads up the fourth toss? 
math
an unbiased coin is tossed six times. find the probability of the given event  the coin lands heads more than once. 
statistics help??
Someone flips a coin 50 times and gets 50 heads in a row. You suspect it is a 2 headed coin. Write the null and alternative hypotheses. Use the binomial theorem to get a pvalue of getting exactly 50 hears in 50 trials. 
statistics
An unfair coin has a probability of coming up heads of 0.55 the coin is tossed 4 times. What is the probability that it lands heads at least once? 
Probability and math statistics
We have two coins, C0 and C1, that looks identical but have different probabilities (0.5 and 0.7 respectively) of showing Heads. A coin is chosen at random and then is tossed X times until a Head comes up. Denote by H0 and H1 the hypotheses …