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Estimating confidence interval for mean value of y (dependent variable).
Consider the simple linear regression of Y, average total sleep time per 24 hour period (ASTD) on X, age of the young child (AGE). Do not use a regression program, rather run the calculations yourself on your calculator or using an Excel spreadsheet or equivalent and determine the regression parameters and the ANOVA table applicable to the following data and then answer the following parts to question 3 and select your answers from the following choices on the test document in Blackboard..
1. What is a 95% confidence interval for the expected average total sleep time for a child of age 12?
a) 454.51 to 505.89
b) 466.75 to 492.01
c) 449.83 to 511.67
d) 468.04 to 490.71
e) It cannot be determined from the information given.
2. A residual is the value Y1- ?1. For the given data set calculate x' and show that it is equal to:
Convert each of the following z intervals to raw score x intervals:
In the history class the mean score was 76 with standard deviation 3.
What is the difference between a final good and an intermediate good? Give one example of each. How are they treated in GDP calculations?
Computing the probability values for the given discrete distribution - What is the probability that you did not shake hands with a person with the flu
Some people have argued for stricter regulations of the banking industry in the wake of the subprime mortgage meltdown.
Evaluate the mean, the median, and the mode of the salaries. Which best describes a typical salary and Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
A high-speed drill reaches 2000 rpm in 0.50 s. What is the drill's angular acceleration? Through how many revolutions does it turn during this first 0.50s.
Determine the expected number of Republicans who will win office in the coming election? Illustrate the standard deviation of r?
A broken piano emits frequencies from a low of 32.0 Hz to a high of about 4100 Hz. What is the shortest wavelength if the speed of sound in air is 342.50 m/s? Record the answer to three decimal places and include units in the answer.
Computing the probability values using normal distribution - The data set has a bell-shaped distribution. Between what two prices do 68% of the houses lie?
If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
Do 1-sample t-test to see if people in Chicago have travelled to fewer states than people nationwide. Utilize the 10% (.10) level of significance.
When the non-parametric statistics utilized? Write down an example.
What is the probability that a cereal would be high calorie, given that is low fiber? In other words, what is P (high calorie, given low fiber)?
How large should n be so that a 90% confidence interval for µ has a margin of error and What is the P-value for a test of the hypotheses
How much variability will you have if you predict sales with this model?
If the mean IQ of all Omega University students was equal to 115, and a small random sample of students was selected from the population whose mean IQ was 120, then this difference of 5 points would equal the:
Probability of a flush. Poker player holds flush when all 5 cards in hand belong to same suit (clubs, diamonds, hearts, or spades).
Determine the coefficient of determination R 2 . Determine standard error of the estimate s e .
Can you conclude that the information in the article is untrue? Use the 0.05 significance level. Determine the p-value and explain its meaning.
Compute the value of z and state your decision regarding the null hypothesis.
Determine probability that student was sophomore? Determine the probability of selecting a face card from deck of 52 cards.
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