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Does crime Pay? The FBI Standard Survey of Crimes showed that for about 80% of all property crimes , the criminals are never found and the case is never solved. Suppose that a neighborhood district in a large city has repeated property crimes, not always by the same criminals. The police are investigating six property crimes cases in this district.
a) What is the probability that none of these crimes will be solved?
b) What is the probability that at least one of these crimes will be solved?
c) What is the expected number of crimes that will be solved? what is the standard deviation?
Find the critical value for different types of sample size and level of significance:
At the .025 significance level, can we conclude that less than 88 percent of the orders are delivered in less than 10 minutes?
Perform a proper analysis. Describe your null and alternative hypothesis, report the p-value. What is your conclusion?
Fit a least squares trend line to the merger data. What type of trend (linear or curved) might best fit to this time series? Compute the forecast for year 20 based on the trend (linear or curved) that best fits the data?
A drug company is considering marketing a new local anesthetic. The effective time of the anesthetic the company is currently producing has a normal distribution with an average of 7.5 minutes and a standard deviation of 1.2 minutes.
A distributor of pre-washed shredded lettuce is opening a new plant and considering whether to use mechanized process or manual process to prepare the product.
I am to compute expected values, test stat, use p-value approach and determine critical value with alph at .05
The payouts for the Powerball lottery and their corresponding odds arean probabilities of occurrence are shown below. The price of a ticket is $1.00. Find the mean and standard deviation of the payout.
Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.
Use empirical Rule to evaluate proportion of costs within 2 standards deviations of mean. Write down these limits.
Assume that the price of non-dividend paying stock is $32, its volatility is 30%, and the risk-free rate for all maturities is 5% per annum. Use derivagem to calculate the costs of setting up the following positions.
A question has these possible choices - excellent, very good, good, fair, and unsatisfactory. How many degrees of freedom are there using the goodness-of-fit test to the sample results?
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