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In the recent Census, 3 percent of the U.S. population reported being two or more races. However, the percent varies tremendously from state to state. Suppose that two random surveys are conducted. In the first random survey, out of 1000 North Dakotans, only 9 people reported being of two or more races. In the second random survey, out of 500 Nevadans, 17 people reported being of two or more races. Conduct a hypothesis test to determine if the population percents are the same for the two states or if the percent for Nevada is statistically higher than for North Dakota.
In words, define the Random Variable for this test.
Assume that a 95% estimate of the mean starting salary is desired. How large a sample should be taken for the following desired margins of error.
Show that there is a continuous function from [0, 1] onto Tin≥1[0, 1]n , a countable product of copies of [0, 1], with product topology. Hint: Take the sequence f (k) as in Problem 10. Let Fk (t )n := f (k)(t )n for n ≤ k, 0 for n > k. Show that F..
what are the values of the 1 test statistic 2-3 critical values and the 4 smallest level of significance at which the
Describe the shape of this distribution.- What is the median of the distribution?- What is the range of the strength scores?
a skeptical paranormal researcher claims the proportion of americans that have seen a ufo p is less than 1 in every one
The Rio-River Railroad, headquartered in Santa Fe, New Mexico, is trying to devise a method for allocating fuel costs to individual railroad cars on a particular route between Denver and Santa Fe.
One-way analysis of variance is a method for comparing several population means, when the data are from independent samples. It a test that examines the relationship between a quantitative response variable and a categorical explanatory variable, ..
You need to estimate the mean number of travel days per year for outside salespeople. The mean of a small pilot study was 150 days, with a standard deviation of 42 days.
in a normal distribution find the probability expressed as a percentage that is greater than a z score of
Compute a 95% confidence interval for the mean using the formula and where is the mean of the ten random numbers.
a researcher concerned about the foreign ownership of the retail trade industry in the u.s. conducts a survey of
To find out the proportion of the population of likely voters who agree the statement. Could we say among appropriate statistical certainty which the proportion of the population of likely voters.
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