1,029 Answered Questions for the topic Statistics Question

Statistics Question

12/20/13

.relationship between hours studied to the test scores. predict the test score if a student studied 4.5 hours. s.

Hours Studied     Test Score   135.8                      6167        there are 24 rows for each         ave 5.658                 256.958      Coefficient  (b1)-98.944374816.8186Intercept... more
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Statistics Question

12/18/13

Find the slope and the y-intercept for the line that passes through (-7,-12) (3,12)
Find the slope and the y-intercept for the line that passes through (-7,-12) (3,12)
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Statistics Question

11/29/13

maths statistics
A random sample of students at university was interviewed todetermine the amount of time that they spend on Facebook andto consider whether the average had changed from its previous level       The... more
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Statistics Question

11/24/13

Statistics questions
The mean incubation time for a type of fertilized egg is 19 days.  Suppose the incubation times are approximately normally distrubuted with a standard deviation of 1 day. What is the probability a... more
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Statistics Question

11/13/13

The following were the grades obtained by 50 medical stds in their practicum in 1978. GRADE 1 2 3 4 5 6 7 8 9 FREQUENCY 4 8 7 12 4 9 3 1 2
The following were the grades obtained by 50 medical stds in their practicum in 1978. FREQUENCY    GRADE 4                             1 8                             2 ... more
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Statistics Question

11/13/13

The following are the ages in years of 40 stds who went on an excursion 12,13,14,12,15,14,13,16,14,15,13,14,14,15,16,12,13,14,15,15,15,13,12,15,16,14,15,15,
The following are the ages in years of 40 stds who went on an excursion 12,13,14,12,15,14,13,16,14,15,13,14,14,15,16,12,13,14,15,15,15,13,12,15,16,14,15,15, 13,14,12,13,15,15,16,16,12,14,15,14, a)... more
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Statistics Question

11/12/13

ASSUMING THAT AN ACURA TSX REQUIRES A CHANGE IN TIMING BELT A 90,000 MILES WITHIN A DEVIATION OF 8,000 MILES.
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Statistics Question Statistics Normal Curve

11/12/13

Find the value of x so that the area under the normal curve is between...
EDIT: μ = 200 and σ = 25.   1. Find the value of x so that the area under the normal curve between μ and x is .4525 and the value of x is less than μ.   2. Find the value of x so that the area... more
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Statistics Question

11/02/13

Statistics Question?
The technical support call center for a software company has a mean wait time of 210 seconds, with a standard deviation of 40 s. The management team wants to continue to improve customer... more
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Statistics Question Statistics Joint Probability

10/22/13

Joint Probability: Let P(A) = .3, P(B) = .4 and P( A U B ) = .7 a. What is the joint probability of A and B? b. Find the probability of the complement of A.
How would I go about answering these questions? Also, how do you differentiate between solving them as a dependent or an independent event?   Let P(A) = .3, P(B) = .4 and P( A ∪ B ) = .7   a.... more
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Statistics Question

10/18/13

You roll a die, flip a coin, and draw a card. What is the probability that:
You roll a die, flip a coin, and draw a card. What is the probability that:You roll a 3, flip a Head, and draw an Ace?
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Statistics Question Empirical Rule

10/18/13

Empirical Rule: Mean is 84 with a standard deviation of 7. Approximately how much is between 63 and 98?
I would like to know how to go about getting the answer to these questions.     1. Empirical Rule: Mean is 84 with a standard deviation of 7. Approximately how much is between 63 and... more
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Statistics Question

09/30/13

A gambler bets $1 on the number "19" 1600 times in roulette. This bet pays 35 to 1. What is the give-or-take on the estimate of his winnings?
a. $184.25b. $96.58c. $230.50d. $84.36e. $23.50
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09/29/13

ANOVA Excel Worksheet
The following table contains a random sample of 40 women partitioned into three groups:Group 1: ages below 20Group 2: ages 20 through 40Group 3: ages over 40the values in the table are systolic... more
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Statistics Question

09/25/13

Using statistics, find mean and probabilities
Soft Drink Cans The amount of soft drink that goes into a typical 355 ml can varies from can tocan.  It is normally distributed with an adjustable mean µ and a fixed standard deviation of 0.4 ml. ... more
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Statistics Question

09/13/13

in a population with a mean of 50, a score of 55 would have a deviation of ?
 in a population with a mean of 50, a score of 55 would have a deviation of ?
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Statistics Question Math Statistics Probability

09/03/13

How do I show Tchebysheffs's theorem,
Let a k ≥ 1. show that for any set of n measurements, the fraction included in the interval y¯ − ks to y¯ + ks is at least (1 - 1/k²).   hint:  s² = 1/(n-1)[ ∑(y - y¯)²] In this expression ,... more
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Statistics Question

06/22/13

What is the joint distribution of X1, X2?
X1, X2 is a random sample from Bernoulli distribution f(x)=px (1-p)(1-x) where x=0,1
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Statistics Question

06/12/13

Using this data, draw some kind of graph and tell the distribution of the graph
Using this data, draw some kind of graph and tell the distribution of the graph I need to have a graph and then know what the graph looks like such as skewed left and right 62 75 86 83 9877 92 96... more
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Statistics Question

06/09/13

Statistics question
published story saying farmers lead other groups in the consumption of alcohol. As evidence, a rehab center located in the rural part of the state treated more farmers than that of any occupational... more
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Statistics Question

06/03/13

What are the components in basic statistics?
Will you please let me know the basic components in statistics?
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Statistics Question

04/11/13

the systolic blood pressures have a normal distribution with a average 120 and a sd 8. the percentage of individuals with a systolic blood pressure above 120 is
the systolic blood pressures have a normal distribution with a average 120 and a sd 8. the percentage of individuals with a systolic blood pressure above 120 is
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Statistics Question

03/13/13

For the following data, calculate the difference between the means distribution parameters. n1 = 25, n2 = 36, s12 = 50, s22 = 72, M1 = 100, M2 = 105
Please show me the work
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Statistics Question

01/07/13

what type of data collecting method is a census?
anecdotal evidence or survey?
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Statistics Question

12/30/12

I have a math problem. I hardly know where to start. Can you help?
Here it is.  Wow..., this is really hard to read for  me. How many close friends do you have? Suppose that the number of close friends adults claim to have varies from person to person with mean 9... more
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