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The following data represents the time it takes a company to respond to an account inquiry for opening a new account.
A. Using the exponential distribution estimate the average waiting time using the sample mean.
1
18
0
22
36
B. preform a hypothesis test to determine if the wait time is different from a days with type 1 error or 0.05, what is the conclusion?
Let x equal the number of cells activating the alarm when the temperature reaches 100F. Find the expected value and the variance for the random variable x.
An emergency program set up by the state. approximate the probability that the intersection in question will come under the emergency program at the end of the next year.
Using the above database, compute a t-test comparing males' and females' heights. You must determine which type of t-test to compute. Write a short interpretation of the results.
Explain the distribution of mean of samples of size 15.
Suppose you are working with a data set that is normally distributed with a mean of 400 and a standard deviation of 20. Determine the value of x such that only 1% of the values are greater than x. (how to find the value of x with z score)
If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
question in a study on the health and development of a bird species yellow robin two different sites were compared
In a graduating class of 753 high school seniors, what is the probability that 15 or more will live beyond their 90th birthday?
Over the interval 9.5 to 12.5 gallons per minute. Find the probability that between 10.0 gallons and 11.0 gallons are pumped during a randomly selected minute.
A random sample of 41 basketball players from The Official NBA Basketball Encyclopedia gave the sample standard deviation for player height as s=3.32 inches.
in an instant lottery your chances of winning are 0.2. if you play the lottery five times and outcomes are independent
question of all the ceos in the citibank walter wriston had the highest disapprovalrating from the internal bankers
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