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A restaurant offers a special pizza with 5 toppings. If there are 12 toppings from which to choose, how many different 5-topping pizzas are there? (Assume the order in which the toppings are chosen is not significant.)
The price of shares of Bank of Florida at the end of trading each day for the last year followed the normal distribution. Assume there were 240 trading days in the year.
where the deviations εi are assumed to be independent and Normally distributed with mean 0 and standard deviation σ. This model was fit to the data using the method of least squares. The following results were obtained from statistical software.
the ceo of a software company is committed to expanding the proportion of highly qualified women in the organizations
Tthe standard deviation was $32. Calculate a 95% confidence interval for the mean health cost per worker per month for all small companies.
a safety light is designed so that the times between flashes are normally distributed with a mean of 4.50 s and a
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about null hypothesis, and final conclusion that addresses the original claim.
Enzymatic method: 13.1, 12.7, 12.6, 13.3, 13.3. GC method: 13.5, 13.3, 13.0, 12.9. Does the enzymatic method give the same value as the GC method at the 95% confidence level?
Describing the results of a hypothesis test of two populations or more than two populations. Include the following: Perform the five-step hypothesis test on data pertaining to your selection.
Calculate 95% and 99% confidence intervals for m. Using the 95% confidence intervals, can we be 95% confident that m is a least 50 pounds? Explain.
Standard deviation of the ages is 6 years. How large a sample should be taken so that the estimate is within 2 years of the population mean?
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
Annual family dental expenses for the families of a random sample of ten employees of a company are given below. You can assume the family dental expenses for the employees of the company are normally distributed.
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