Question number 7: Consider the following variables. For each variable, identify its distribution as either "Exactly...
Question number 7: Consider the following variables. For each variable, identify its distribution as either "Exactly Normal," "Approximately Normal," or "Neither" (short for neither Exactly Normal nor Approximately Normal).
Life expectancy in a country is known to follow a
left-skewed distribution. Suppose we take a random sample of 7
citizens and denote the sample mean life expectancy by X̄. The
distribution of X̄ is
Choose...
.
The weights of bananas follow a Normal distribution. Suppose we
take a sample of 8 bananas, and denote the sample mean weight by
X̄. The distribution of X̄ is
Choose...
.
Run times at a marathon are known to follow a left-skewed
distribution. Suppose we take a sample of 86 runners, and denote
the sample mean run time by X̄. The distribution of X̄ is
Choose...
.
In a certain city, it is known that 3.5% of the residents have red
hair. Suppose we take a sample of 700 residents, and denote the
sample proportion of members with red hair by p̂. The distribution
of p̂ is
Choose...
.
Albinism is estimated to occur in 0.00588% of all people. Suppose
we take a random sample of 500 people, and denote the sample
proportion of members with albinism by p̂. The distribution of p̂
is
Choose...
Homework Answers
Neither
Exactly normal
Exactly normal
Approximately Normal
Neither
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Question number 7: Consider the following variables.
For each variable, identify its distribution as either "Exactly...
Consider the following variables. For each variable, identify its distribution as either "Exactly Normal," "Approximately Normal,"...
Consider the following variables. For each variable, identify its distribution as either "Exactly Normal," "Approximately Normal," or "Neither" (short for neither Exactly Normal nor Approximately Normal). • Life expectancy in a country is known to follow a left-skewed distribution Suppose we take a random sample of 7 citizens and denote the sample mean life expectancy by X. The distribution of X is Choose... . The weights of bananas follow a Normal distribution Suppose we take a sample of 8 bananas,...
Question number 4: Life expectancy in a country is known to follow a left-skewed distribution with...
Question number 4: Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 79.66 years and a standard deviation of 3.06 years. Suppose we take a random sample of 15 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 79.74 years?
Life expectancy in a country is known to follow a left-skewed distribution with a mean value...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 78.26 years and a standard deviation of 4.29 years. Suppose we take a random sample of 8 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 78.52 years? Select one: a. 0.6844 b. 0.9127 c. 0.4800 d. 0.3156 e. We cannot answer this question with the information given.
Life expectancy in a country is known to follow a left-skewed distribution with a mean value...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 81.00 years and a standard deviation of 3 30 years. Suppose we take a random sample of 15 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 80.97 years? Select one: O 0.3073 b. 0.5517 O c 0.1300 d. 0.4483 e. We cannot answer this question with the...
Question 2 (0.5 points) A random variable X follows a normal distribution with mean of 50...
Question 2 (0.5 points) A random variable X follows a normal distribution with mean of 50 and standard deviation of 5. Suppose we take a simple random sample of size 60 from the population above. Can we calculate the probability that the sample mean is between 45 and 60? (You do not need to actually calculate the probability for this question.) Yes, and the calculated probability would be exact. Yes, and the calculated probability would be approximate. No. Question 3...
1. Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with...
1. Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean 24 months and standard deviation 2 months. Suppose that a sample of 52 lightbulbs is taken. What is the probability that the average lifetime of these bulbs is greater than 24.32 months? Answer is 0.1251 5. fill amounts of jars of peanuts from a certain factors are known to follow a Normal distribution with mean 454g and standard deviation 15g. Suppose that a...
For each of the following variables, identify the type of variable (categorical vs. numeric). (I) Number...
For each of the following variables, identify the type of
variable (categorical vs. numeric).
(I) Number of auto insurance claims in a month
(II) Film genre (e.g. comedy, horror, drama, etc)
Question 1 options:
1)
(I) Categorical , and (II) Categorical
2)
There is no correct match.
3)
(I) Categorical , and (II) Numeric
4)
(I) Numeric , and (II) Numeric
5)
(I) Numeric , and (II) Categorical
Question 2 (1 point)
Saved
For each of the following variables, identify...
3. Now consider your cleaned data in reference to the Armspan variable/factor of the student data...
146.0
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152.0
152.5
153.0
153.5
154.0
154.5
155.0
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156.0
158.5
159.0
159.0
160.0
160.0
160.0
160.5
161.0
161.0
161.0
162.0
162.0
162.5
163.0
163.0
163.0
165.0
165.0
165.5
165.5
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166.5
167.0
167.0
167.5
167.5
167.5
167.5
168.0
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169.5
170.0
170.0
170.5
170.5
172.0
172.0
172.0
172.5
172.5
173.0
173.0
173.5
173.5
174.0
174.5
175.0
175.0
175.0
175.0
175.5
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176.5
176.5
177.0
177.0
178.0
180.0
180.0
180.5
181.0
183.0...
1. A population of N=1200 has a standard deviation of 20. In each of the following...
1. A population of N=1200 has a standard deviation of 20. In each of the following cases, which formula will you use to calculate the standard deviation of the sample mean and then use the appropriate formula to calculate it: a. n=96 b. n=30 2. Dartmouth Distribition Warehouse makes deliveries of a large number of products to its customers. It is known that 85% of all the orders it receives from its customers are delivered on time. Let p-hat be...
6. The sampling distribution of the sample proportion In 2007, about 30% of new-car purchases in ...
Please Help me to full the all
blank (11 blanks in total)
6. The sampling distribution of the sample proportion In 2007, about 30% of new-car purchases in California were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in California can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in California...
Consider the following variables. For each variable, identify its distribution as either "Exactly Normal," "Approximately Normal," or "Neither" (short for neither Exactly Normal nor Approximately Normal). • Life expectancy in a country is known to follow a left-skewed distribution Suppose we take a random sample of 7 citizens and denote the sample mean life expectancy by X. The distribution of X is Choose... . The weights of bananas follow a Normal distribution Suppose we take a sample of 8 bananas,...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 81.00 years and a standard deviation of 3 30 years. Suppose we take a random sample of 15 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 80.97 years? Select one: O 0.3073 b. 0.5517 O c 0.1300 d. 0.4483 e. We cannot answer this question with the...
Question 2 (0.5 points) A random variable X follows a normal distribution with mean of 50 and standard deviation of 5. Suppose we take a simple random sample of size 60 from the population above. Can we calculate the probability that the sample mean is between 45 and 60? (You do not need to actually calculate the probability for this question.) Yes, and the calculated probability would be exact. Yes, and the calculated probability would be approximate. No. Question 3...
For each of the following variables, identify the type of
variable (categorical vs. numeric).
(I) Number of auto insurance claims in a month
(II) Film genre (e.g. comedy, horror, drama, etc)
Question 1 options:
1)
(I) Categorical , and (II) Categorical
2)
There is no correct match.
3)
(I) Categorical , and (II) Numeric
4)
(I) Numeric , and (II) Numeric
5)
(I) Numeric , and (II) Categorical
Question 2 (1 point)
Saved
For each of the following variables, identify...
146.0
149.0
151.0
151.0
152.0
152.5
153.0
153.5
154.0
154.5
155.0
155.0
156.0
156.0
156.0
158.5
159.0
159.0
160.0
160.0
160.0
160.5
161.0
161.0
161.0
162.0
162.0
162.5
163.0
163.0
163.0
165.0
165.0
165.5
165.5
166.0
166.0
166.5
167.0
167.0
167.5
167.5
167.5
167.5
168.0
169.0
169.0
169.0
169.5
170.0
170.0
170.5
170.5
172.0
172.0
172.0
172.5
172.5
173.0
173.0
173.5
173.5
174.0
174.5
175.0
175.0
175.0
175.0
175.5
176.0
176.5
176.5
177.0
177.0
178.0
180.0
180.0
180.5
181.0
183.0...
Please Help me to full the all
blank (11 blanks in total)
6. The sampling distribution of the sample proportion In 2007, about 30% of new-car purchases in California were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in California can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in California...
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