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According to a Gallup poll conducted March 5-7, 2001, 52% of American adults think that protecting the environment should be given priority over developing energy supplies is more important, and 6% believe the two are equally important. The rest have no opinion. " Suppose that a a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
a)50 or more think protecting the environment should be given priority.
b) 30 or fewer think that developing energy supplies is more important.
c) 5 or more have no opinion.
Construct a frequency distribution (class, tally and frequency) for the data set using the indicated number of classes. In the table, include the midpoint, relative frequencies and cumulative frequencies.
What is the P-value of the test, assume the standard deviation is 3 years, a 95% confidence interval for the average time
Critically illustrate out the term standard deviation. Define mathematical averages. Why is the standard deviation less than the mathematical average?
Multiple choice questions based on regression - multiple coefficient of determination
Write a sample result section, discussing your data screening activity (this section should be in APA format).
What is the probability that at least one of the new books is a commercial success?
A random sample of 346 individuals is selected, and the individuals are classified according to their smoking habits and the smoking habits of their parents. The results are given in the contingency table below.
Suppose you roll a standard die 2000 times and let X be the sum of the values you get. Using the Central Limit Theorem, for what value of a is P[X >= a] approximately equal to P[N(0,1) >= 2] ?
There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used
Illustrate the regression model and predict it. The following table shows the yearly maintenance costs for several cars, as well as their age.
A recent study of the Greater Los Angeles Taxi Driver Association demonstrated that the average or media tariff that they charge from Hermosa Beach to the International Airport of Los Angeles is $18.00
Compute SS, variance, and standard deviation for following population of N = 7.Scores: 8, 1, 4, 3, 5, 3, and 4. The definitional formula works well with these scores. Use the definitional formula to compute SS.
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