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To be eligible for a certain job, women must be at least 62 inches tall, and 87% of women meet this criterion. In a random sample of 2000 women, X = number who qualify for the job (based on height).
a. Use the normal curve to approximate P(X ≤ 1700), the probability that 1700 or fewer women have the necessary height to qualify for the job.
b. Use statistical software, Excel, or a graphing calculator to find the exact binomial probability that 1700 or fewer women in the sample are tall enough to qualify for the job.
Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:
a pharmaceutical company claims that their drug is effective on more than 90 of all adults. a research company randomly
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Repeating this experiment many times with different samples, what values for the sample means would be possible? What values would repeat more often?
the shape of the distribution of the time required to get an oil change at a 10-minute oil-change facility is unknown.
If we fit the least-squares line to the 12 data points (one for each month) we obtain the following results from a software package. Notice that temperature is taken as the explanatory variable and crawling age as the response.
if i roll a fair die 1000 times find the probability the number of threes is strictly between 125 and 165 using excel
In a simple random sample of 40 connectors from a very large production run, the mean time until failure was found to be 35.5 seconds. Construct and interpret the 99% confi- dence interval for µ 5 the mean time until failure for all of the conne..
Define the research questions for the identified problem or opportunity - Select the appropriate research methodologies and techniques to use for the research project
For a random sample of 23 European countries, the variance on life expetancey was 7.3 years. What is the 95% confidence interval for the variance of life expectancy in all of Europe?
assume that the number of customers who arrive at a water ice stand follows the poisson distribution with an average
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