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The amount of fluid in a half-liter bottle of diet cola is normally distributed, and from past experience, the standard deviation is known to be 1.20 milliliters. A sample of 50 bottles reveals a mean weight of 502.1 ml. Construct and interpret a 90% confidence interval for the mean. Be sure to interpret the meaning of this interval.
Discuss which analysis of variance should be applied when an experiment has more than one independent variable. Discuss the assumptions and limitations of the analysis.
She surveys 100 randomly selected families and finds the mean income to be $96,321 with a standard deviation of $9555.With a0.05, is she correct?
The manufacturer of a computer terminal reports in its advertising that the mean life of the terminal, under normal use, is 6 years, with a standard deviation of 1.4 years.
Due to increase in product demand, management needs to increase labor production hours by an estimated 270 hours. Any-Business currently has 30 production employees whose hourly wages varies from $7.50 - $8.50 per hour.
In regression equation, the value of y-intercept indicates the value of Y when the value of X is zero.
The time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution with a mean of 10 minutes. What is the probability that the arrival time between customers will more than 20 minutes?
A survey of the number of calls received by a sample of Southern Phone Company subscribers last week revealed the following information.
construct a frequency distribution table for these data. what type of graph would be appropriate to show the frequency distribution for these data?
Last year the records of Dairy Land Inc., a convenience store chain-What is the p-value? Follow the five-step hypothesis testing procedure.
Possible test scores ranged from 0 to 500. Assume that the scores are normally distributed. What is the probability that a student had a score higher than 315?
Oxytocin is a naturally occurring brain chemical that is nicknamed the "love hormone" because it seems to play a role in the formation of social relationships such as mating pairs and child-parent bonding.
Suppose that it is a presidential election year and Ohio is one of the 'swing' states. Your polling company wants to conduct a presidential preference poll of the citizens of Ohio to predict which candidate will win the election.
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