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Of 1000 applicants for a mountain-climbing trip in the Himalayas, 450 get altitude sickness, 622 are not in good enough shape, and 30 have allergies. An applicant qualifies if and only if this applicant does not get altitude sickness, is in good shape, and does not have allergies. If there are 111 applicants who get altitude sickness and are not in good enough shape, 14 who get altitude sickness and have allergies, 18 who are not in good enough shape and have allergies, and 9 who get altitude sickness, are not in good enough shape, and have allergies, how many applicants qualify?
She will make the mean raise $1000 and the standard deviation $179. Basing this on worker productivity (toys constructed), the most productive 10% of employees will see a raise of at least how much?
Calculate the value of chi-square. What is your decision regarding H 0 ?
A binomial experiment has 10 trials with a probability of success of 0.62 in each trial. What is the standard deviation of the binomial random variable?
Describe the sampling distribution of p-hat, the sample proportion of college students with the cell phones who send or receive the text messages with their phones.
The upper limit of a 95% confidence interval for the population mean would equal:
With a standard deviation of 0.5. At a .05 significance level, can we conclude college students watch fewer videos per month than high school students?"
suppose 15 of the trees in a forest have severe leaf damage from air pollution. if 5 trees are selected at random find
The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months. What is the minimum and the maximum life expectancy of the middle 95% of the watches?
What is the most controllable method of increasing the precision (narrowing) of the confidence interval? What percentage of times will the mean (population proportion) not be found within the confidence interval?
In your environment (business or personal), please give an application of exponential smoothing and why you would use this technique.
Assume that you are conducting a survey of customer satisfaction regarding their cellular phone.
Calculate the test statistic and the df - Write a conclusion, addressing the research question. Your conclusion should include an interpretation of the 95% confidence bound which is given in the above output
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