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The ticket booth on the Tech campus is operated by one person, who is selling tickets for the annual Tech v/s State football game on Saturday. The ticket seller can serve an average of 12 customers
Independence cannot usually be seen or proved from Venn Diagrams. Example: For the following Venn Diagrams decide whether or not the events A and B are independent, mutually exclusive or both. Rema
Giving one group of people a diet supplement and another a placebo and putting both groups on the same meal program for one month before comparing the weight losses of both groups can be categorized
Students were asked to record their weights in pounds. The weights (as recorded) are given here: 270 168 164 93 176 195 394 169 2 91 135 167 270 229 170 142 118 1. Find any outliers.
Suppose that each relay in an electrical circuit has a reliability of 0.9 for a specified operating period of t hours. For independently operating components with identical life distributions, find
A survey was done by Shop 'n' Bag supermarket headquarters. The management is concerned about the high turnover of stockers (you don't think those boxes and cans just magically appear, do you?). A s
What is the probability that he will hit the target two times? What is the probability that he will hit the target at least once?
The lifetime of a SuperTough AAA battery is normally distributed with mean μ=28.5 hours and standard deviation σ=5.3 hours. For a battery selected at random, what is the probability that th
The delivery time for a package sent within the United States is normally distribution with a mean of 4 days and a standard deviation of approximately 1 day. If 300 packages are being set, how many
Mean daily discharge of 27 ml per liter with a standard deviation of 14 ml per liter. What proportion of the daily discharge exceeds 50 ml per liter?
We have another nuisance factor that has an effect on the response variable, but the effect is not of interest. It is important that we have some experimental control with regard to the nuisance fa
Approximate p-hat by a normal distribution. What is the probability that the proportion of the group that supports the referendum is no more than 30%.
Can the classical approach to probability be used to determine P (less than 60 seconds between green lights)? Why or why not?
What is the average rating to two decimal places for a nurse who received the following ratings: 1 for bedside manner, 4 for record keeping, 1 for promptness, and 2 for professional appearance?
5 percentage points in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.
The southern hemisphere has its summer when the United States has winter. How hot does it get in the Alice Springs (in the Northern Territory of Australia)? The following data represents ground tem
At the 0.05 level of significance, is there evidence that the population mean waiting time is less than 5 minutes?
Is the relationship linear? Now we compute the slope and the intercept for least squares regression line. What would happen if the forest service agent took another sample of 31 trees? Would the slo
The Falcons baseball team is not as young as it used to be. The current ages of the players are given here: 30 34 31 50 30 28 53 46 42 42 49 35. Compute the median of their ages to one decimal place
How expensive is Toronto? The Toronto Traveler News recommends that if you are planning to vacation in Toronto that you should consider renting a condominium. The following data represents a random
Asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic abuse.
Make sure to standardize (z) using the standard deviation for the sampling distribution. Let"s consider the very large database of individual incomes from the Bureau of Labor Statistics as our popu
Assuming that the order in which the winning lottery numbers are selected is irrelevant (i.e., not important), what is probability of someone correctly selecting the six (6) winning lottery numbers?
Diabetics need to keep close watch on glucose blood levels (mg/100 ml). The 12-hour fasting blood glucose levels for twenty-five diabetics are given below. If you use six classes for a frequency dis
A claim is made that 60% of the adult population thinks that there is too much violence on television. You think this figure is too high. Suppose that a random sample of 200 adults found that 110 t