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A sample of 36 patients in a doctor's office showed that they had to wait an average of 45 minutes with a standard deviation of 10 minutes before they could see the doctor. Provide a 90% confidence interval estimate for the average waiting time of all the patients who visit this doctor.
Mean of 2.25 ounces and a standard deviation of 0.15 ounce. 77% of the apples will contain at least how many ounces of juice?
If I were to invite you to play the above game where I would pay you your score in dollars (1 point = 1 dollar), what should I charge you to play?
The psychologist's task is to select the 10 high-anxiety subjects. Find the probability that the psychologist guesses at least 9 of the 10 high-anxiety subjects correctly.
Find the mean, median, mode, sample variance, and range. Do you think that this sample might have come from a normal population? Why or why not?
Commercial A was selected by 45 out of 100 women and 80 out of 140 men. A large-sample 95% confidence interval for this difference is?
Suppose that for a particular flight involving a jumbo-jet with 265 seats, the airline sells 278 tickets. What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
Illustrate out the term control chart? Critically discuss the grand mean, the UCL and the LCL of a control chart for the mean?
Suppose that an individual stock's return is normally distributed with a mean of 10% and a standard deviation of 8%. What is the probability that the stock's return will be at least 16%?
Do women talk more than men? Equip male and female students with a small device that secretly records sound for arandom 30 seconds during each 12.5 minute interval for two days.
The sample mean difference was 0.41 and Sd was 0.387.
a researcher is studying the weight changes that women go through over the course of pregnancy childbirth and
Find out the expected winnings for a person who buys one ticket.
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