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A fair coin is tossed 8 times. What is the probability that:
a) Exactly 4 heads appear?
b) At least two heads appear?
c) At most 5 heads appear?
if we are testing the difference between the means of two normally distributed populations with samples of n1 10 n2
What is the probability of getting seven heads in a sample of twenty coin flips? Is this significantly different from the population in which P = 0.50 if the alpha is 0.05?
Find the 90% confidence interval for the variance and standard deviation of the ages of seniors at oak park college if a sample if 24 students has a standard deviation of 2.3 years.
The average 1-ounce chocolate chip cookie contains 110 calories. A random sample of 15 different brands of 1-ounce chocolate chip cookies results in the following calorie amounts. At a=0.01 level
Identify at least one example of probability encountered in everyday life which has not previously been mentioned.
Use this information to determine the empirical probability that the next bird to visit the feeding station will be a dove.
a new phone answering system is capable of handling 6 calls every 10 minutes. prior to installing the new system
describe the error in the conclusion. given there is a linear correlation between the number of cigarettes smoked and
For a sample of 240 students selected at random, what is the mean and variance of the number of students who watch this game?
a sample of four tires is taken from alot of brand-a tires. another sample of four tires is taken from a lot of brand-b
A consumer watchdog organization wants to see whether Bank N in the northern part of a state has a higher default rate than Bank S in the southern part of that same state.
Time spent using e-mail per session is normally distributed, with μ = 8 minutes, and σ = 2 minutes. If you select a random sample of 25 sessions,
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