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It is known that the number of weekly hours of exercise made by students of a certain university is distributed normally with variance of 64. You want to estimate the sample size needed to estimate the actual average of weekly hours of exercise, with an error of 1.18 hours and a 96% confidence level. (Express your answer as a whole number).
Create your own situation that could be modelled with a binomial probability. Explain in your own words and in the context of your situation.
the weekly mean income of a group of executives is 1000 and the standard deviation of this group is 100. the
The population mean annual salary for environmental compliance specialists is about ?$61,500. A random sample of 31 specialists
Heart rate during laughter. Laughter is often called ‘‘the best medicine,'' since studies have shown that laughter can reduce muscle tension and increase.
Using the following data, tested the null hypothesis that male and female turtles have the same mean serum cholesterol concentrations, measured in mg/100 ml.
What is the probability that all five families drive more than 90 minutes on a randomly selected day - What is the probability that the driving time
A researcher wishes to test the claim that the average age of lifeguards in Ocean City is greater than 24 years. She selects a sample of 36 guards and finds the mean of the sample to be 24.7 years with a standard deviation of 2 years. Is there evi..
nurses wondered if birth weights of babies are going up. they knew that the average birth weight of a baby last year
Draw a picture of the appropriate sampling distribution, and show where the value P^1 - P^2 = 0.13 falls on it.- Find the value of the standardized statistic corresponding to P^1 - P^2 = 0.13.
Suppose you are playing in a championship basketball game. There are four seconds left in the game and your team is losing by two points.
Refer to Commercial properties Problem 6.18. Assume that regression model (6.5) for four predictor variables with independent normal error terms is appropriate. Three properties with the following characteristics did not have any rental informatio..
Find the probability that the mean age of those doctors is less than 53.00 years. Assume that the variable is normally distributed.
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