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The number of vaiolent crimes committed in a day possesses a distribution with a mean of 2.8 crimes per day and a standard deviation of 4 crimes per day. A rendom sample of 100 days was observed, and the sample mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean.
Find a 95% confidence interval for the mean daily caloric intake. Interpret this interval.
Utilizing the 5% level of significance as there was a significant change in cholesterol level. Their total cholesterol levels before also after the diet.
The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." What is the probability that the randomly selected unit from a recently manufactured batch weighs no more than 3.50 ounces.
A study sponsored by American Express Co. and the French government tourist office found that old American stereotypes about French unfriendliness weren't true.
Find the area under the normal distribution curve to the right of z = -1.03.
The market model relating the rate of return of stock XYZ (denoted RXYZ) to the rate of return Of a broader index of the stock market (denoted RM) is reported as:
Examine the relationship between final grade and the reported hours per week each student said they studied for the course. Do we have evidence that females are being discriminated against?
Find out the variance for percentage of tickets? Determine the probability that your sample will have the average between 70 and 75?
To find out the test statistics utilizing chi square method. A professional bowler has been having trouble 'hitting the pocket' in order to get strikes.
Determine the mean and standard error of the x - bar distribution.
Assume that the amount your town's population grows every year is fixed or constant. Utilize your equation in part b to approximate the population in the year 2030.
The simple coefficient of determination is the proportion of total variation explained by the regression line.
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