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Estimation
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Questions (1,048)
For the model X=\Theta +W, and under the usual independence and normality assumptions for \Theta and W, the mean squared error
2 answers
asked anonymously
139 views
Suppose that X_1=delta+W_1 and X_2=2*delta+W_2, where delta, W_1, W_2 are independent standard normal random variables. If the
2 answers
asked by
Ramya
110 views
Let \widehat\Theta be an estimator of a random variable \Theta, and let \widetilde\Theta =\widehat\Theta -\Theta be the
2 answers
asked anonymously
84 views
Researchers at Moore Hospital asked 50 randomly selected patients about their sleep habits. 22 reported sleeping 8 hours or more
2 answers
asked by
sophia
78 views
Bowls A and B contain a number of white and red balls. Clark repeatedly selected a ball from both Bowls and recorded the results
2 answers
asked by
Me
186 views
A fish and game warden captures and tags 66 deer in a local forest. A month later he captures 100 deer and that 17 of them are
4 answers
asked by
James Glass
94 views
Lucy wants to find out the number of frogs in a pond near her house. She catches 54 of them, puts a leg band on each frog, and
4 answers
asked by
James Glass
81 views
A printer can print 12 pages in 9 seconds. What is the closest estimate of the number of pages it can print in one minute?
45 100
2 answers
asked by
stan enhypen
83 views
Ross has a spinner that is split into eight equal sections numbered 1 through He spun the spinner 1,576 times. Which of the
2 answers
asked by
doaflip
105 views
Tony works in a factory that produces 1,000 computers each day. When 50 computers were sampled, it was found that 7 were
2 answers
asked by
F
124 views
To gather information about the elk population, biologist marked 75 elk. Later, they flew over the region and counted 250 elk,
4 answers
asked by
+Dianna+
76 views
A group of researchers wanted to monitor the trout population, so they marked 340 trout with tags. Later, they captured 600
1 answer
asked by
+Dianna+
81 views
While doing research on a lake, biologists tagged 200 walleye. Later, they captured 160 walleye, of which 16 had tags. What is
1 answer
asked by
+Dianna+
56 views
In a random sample of 400 watches, 3 are defective. Out of a total of 10,500 watches, how many would you expect to be defective
1 answer
asked anonymously
149 views
14. According to the Texas Parks and wildlife Department, there are about 40 white-tailed deer per square mile in each of 35
4 answers
asked by
vincent
2,265 views
At the Grocery Store checkout counter, you watch the amounts of your purchases and coupons entered into the cash register. The
4 answers
asked by
Quil
656 views
1. Estimate a 15% tip on a taxi ride that costs $23.25.
I will first round the cost to the nearest dollar. $23.25 ≈ $23.00 I
39 answers
asked by
Lizzie
3,540 views
To gather information about the elk population, biologist marked 75 elk. Later, they flew over the region and counted 250 elk,
4 answers
asked by
sammy
176 views
Game wardens use experiments to help determine the number of raccoons in a forest. Suppose 60 raccoons are caught, tagged, and
1 answer
asked anonymously
128 views
As in the video above, let R_1,\ldots ,R_ n\stackrel{iid}{\sim } \textsf{Ber}(p) for some unknown parameter p. We estimate p
2 answers
asked anonymously
77 views
Is the MLE \, \hat{\theta }^\text {MLE}\, asymptotically normal?
It is asymptotically normal It is not asymptotically normal If
2 answers
asked anonymously
68 views
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
A researcher tagged 40
1 answer
asked by
bddjddbfjkeefklfknrglr/e;g;elnngkseklsgnjebgbllfriehgwoiqe9o3rh4i3o3099iej80
89 views
Estimate the value of 6×2–√. Which of the following choices is the best estimate?(1 point)
Responses: 9.8 8.4 7.1 6.4
4 answers
asked by
deftones
559 views
Estimate the value of 6×2–√. Which of the following choices is the best estimate?
4 answers
asked anonymously
44 views
Estimate the value of 6×2–√. Which of the following choices is the best estimate?(1 point)
Responses 7.1 6.4 8.4 9.8
3 answers
asked anonymously
332 views
The sample mean estimate Theta hat of the mean of a random variable with variance 1, based on 100 samples, happened to be 22.
2 answers
asked by
Ramya
82 views
Carrie asked 50 randomly selected middle school students at King’s High School about their favorite fast food item. Twenty-one
1 answer
asked by
ty
97 views
Game wardens use experiments to help determine the number of deer in the state of North Carolina. Suppose 120 deer are caught,
1 answer
asked by
༼ つ ◕_◕ ༽つ
88 views
The first day, Brian saw 31 birds and twice as many squirrels as birds. The second day, Brian saw 20 birds and 42 squirrels.
1 answer
asked by
luke
101 views
You buy 3 pairs of pants for $19 each and 5 shirts for $10 each. Which of the following is a good estimation of how much money
6 answers
asked by
luke
51 views
Ice cream beans are selling for $10 per pound and durians are selling for $9 per pound. If the market sold a total of $196 worth
1 answer
asked by
luke
60 views
Mary wanted to add to her collection of model planes and trains. She wanted to add 5 model planes which cost $19 each and 3
4 answers
asked by
luke
65 views
A bicyclist was on a three day tour around a lake. On the first day, he rode 78 miles, on the second day he rode 54 miles, and
1 answer
asked by
luke
84 views
A bicyclist was on a three day tour around a lake. On the first day, he rode 78 miles, on the second day he rode 54 miles, and
4 answers
asked by
luke
73 views
Bias and MSE
We estimate the unknown mean θ of a random variable X with unit variance by forming the sample mean
3 answers
asked by
Skyfall
1,047 views
The sample mean
Let X be a continuous random variable. We know that it takes values between 0 and 6, but we do not know its
3 answers
asked by
SK
948 views
How can estimating be helpful before finding an actual product.
13 answers
asked by
Hero
4,353 views
Sally works in a factory that produces 1,00 televisons each day. When 40 televisons
were sampled, it was found 6 were defective.
14 answers
asked by
:I
2,535 views
A statistic instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and weighed the bags.They weighed
4 answers
asked by
Jaz
5,092 views
Let X be a continuous random variable. We know that it takes values between 0 and 3, but we do not know its distribution or its
5 answers
asked by
juanpro
961 views
plz help bot
game wardens use experiment to help determine the number of deer in the state of north carolina soppose 120 deer are
1 answer
asked anonymously
75 views
Estimate the value of 6×2–√. Which of the following choices is the best estimate?(1 point)
Responses 6.4 6.4 8.4 8.4 9.8 9.8
2 answers
asked anonymously
202 views
Randy is starting a beehive so that he can have fresh honey. He decides to check the current population of bees in the hive by
2 answers
asked by
+Dianna+
88 views
A group of researchers wanted to monitor the trout population, so they marked 340 trout with tags. Later, they captured 600
4 answers
asked by
+Dianna+
76 views
Estimated the value of 6 x ✓2. Which of the following choices is the best estimate?
A. 9.8 B. 6.4 C. 8.4 D. 7.1
2 answers
asked anonymously
52 views
Researchers as Jackson Hospital asked 40 randomly selected patients about their sleep habits. Sixteen reported sleeping 8 hours
1 answer
asked by
z
115 views
Lucy wants to find out the number of frogs in a pond near her house. She catches 54 of them, puts a leg band on each frog, and
1 answer
asked by
༼ つ ◕_◕ ༽つ
103 views
Randy is starting a beehive so that he can have fresh honey. He decides to check the current population of bees in the hive by
1 answer
asked by
social studies
83 views
Estimate the value of 6×√2. Which of the following choices is the best estimate?(1 point)
Responses 7.1 7.1 9.8 9.8 8.4 8.4
5 answers
asked by
lol
148 views
Estimate the value of 6×2–√. Which of the following choices is the best estimate?(1 point)
Responses 7.1 7.1 9.8 9.8 8.4 8.4
2 answers
asked by
lol
199 views
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