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A club with 31 members is voting on a proposal. A group of 4 has decided to vote in favor of the proposal while each of the rest of the members vote independently with a chance of 42% in favor of the proposal. What are the chances that the proposal will get the majority vote?
An engineer was interested in comparing the variability of the power of a laser at current levels of 16 amps (X) and 20 amps (Y). To do so, random samples of 25 observations of power readings were obtained at each current level. The samples ..
CPI and Subway Fare Find the best predicted cost of subway fare when the consumer Price Index (CPI) is 182.5 (in the year 2000).
How many social robots would need to be sampled in order to estimate the proportion of robots designed with legs, no wheels to within .075 of its true value with 99% confidence. Given that a random sample of 106 robots showed that 63 were designed wi..
What are the assumptions of regression analysis and how do you evaluate them?
A study of family income is studied through a sample of 500 randomly selected families. The results can be summarized as the mean family income was 41,000 the median income was 29,000.
a quarter back completes 34 of his passes. we want to observe this quarterback during one game to see how many pass
Linear correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance level alpha. n = 11, Alpha = 0.01
At the .05 significance level, is the number of units produced on the afternoon shift larger?
The annual demand for a product is 1,000 units. The company orders 200 units each time an order is placed. The lead-time is 6 days, and the company has determined that 20 unites should be held as a safety stock.
Compute the 95% confidence interval for the proportion of adults who are planning to buy a new car in the next 6 months.
Large non-normal population with a mean of 10 and variance of 16, what would be the mean, variance, standard deviation and shape of the distribution of sample means? Give reasons for your answers.
The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.
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