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Given the Life expectancy data for the countries of the E.U., can we conclude that the mean Life Expectancy in the U.S. is greater than the mean Life expectancy in the E.U.?
Bring to mind a real-world situation or problem that could be addressed using a single-sample t test.
For this situation or problem:
Clearly identify the independent and dependent variables you would study.
Generate the statistical null and alternative hypotheses.
Describe what information the effect size would tell you that the probability value would not.
Using realistic numbers for values of degrees of freedom, sample size, and t statistic, report hypothetical results in a few sentences using correct APA format.
Expected value, variance and standard deviation.A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows.
To test the null hypothesis that the mean waist size for males under 40 years equals 34 inches versus the hypothesis that the mean differs from 34, the following data were collected: 33, 33, 30, 34, 40, 35, 35, 32, 32, 34, 36, 30 calculate the T-v..
In a particular region of Rhode Island, it is known that fisherman's trap on average of 32 pounds of lobster per day with a standard deviation of four pounds.
A raffle offers a first prize of $1000 2 second prizes of $300 and 20 third prizes of $10 each. If 15000 tickets are sold at 75 cents each, find the expected winnings (IN CENTS) for a person buying one ticket?
A class contains 30 students. Ten are female (F) and U.S. citizens (U); 12 are male (M) and U.S. citizens; 6 are female and non-U.S. citizens (N); 2 are male and non U.S. citizens. A name is randomly selected from the class roster and it is female..
Determine the level of measurement for these items related to the newspaper business? The following data gives the weekly amounts spent on groceries for sample of households.
Each year approximately 160 colleges compete in national concrete canoe competion. Each team should design a seaworthy canoe from a substance not known for its capacity to float. T
In the Florida lottery, six numbers from 1 to 53 must be selected. to win the jackpot, the six numbers must match the draw numbers.
Now compute the standard deviation for this distribution.
What does it mean to say that a particular value of x has a z-score of -2.1?
Assume that respondents had been asked for party affiliation in a poll. THe responses were coded as 0 (for democra), 1 (for republican), 2 (for independent), or 3 (for any other response).
Critically discuss understanding the normal distribution and the factors that affect its shape important in solving business and marketing-related questions?
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