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It is very difficult for small businesses to be successful. The Small business administration estimates that 20 percent will dissolve or go bankrupt within two years. A sample of 50 new businesses is selected. (show work)
a. What is the mean and standard deviation of this distribution?
b. What is the probability that more than 16 in the sample will go bankrupt?
c. what is the probability that exactly 14 will go bankrupt?
d. What is the probability that between 7 and 9 businesses will go bankrupt?
e. What is the probability that between 7 and 15 businesses will go bankrupt?
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
Standard deviations for first- and second-time and confidence interval
Multiple choices based on regression analysis - the percentage of variation in the dependent variable explained by the variation in the independent variable
Are all the events in this distribution mutually exclusive? Describe in detail.
If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
The Greenberg public hearing meeting turned stormy. Citizens from four suburbs were gathered at city hall to try to get the city's federal funds for their own suburbs. The government recently awarded $750,000 to the city for road improvements. The..
A researcher wishes to forcast the proportion of fish in a perticular lake which is inedible due to pollution of the lake.
A sample of 100 widgets from the Acme production line shows that the average lifespan of these parts is 900 hours. The standard deviation of production has been 200 hours historically and is known to be normally distributed.
Write the regression equation approximately. Computed the coefficient of determination(r 2 ).
X is a normally distributed random variable with mean 10 and variance 24. a. Find P(X bigger 14) b. find P(8 smaller X smaller 20)
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
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