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A fitness company is building a 20-story high-rise. Architects building the high-rise know that women working for the company have weights that are normally distributed with a mean of 143 lb and a standard deviation of 29 lb, and men working for the company have weights that are normally distributed with a mean of 182 lb and a standard deviation of 28 lb.
You need to design an elevator that will safely carry 20 people. Assuming a worst case scenario of 20 male passengers, find the maximum total allowable weight if we want a 0.98 probability that this maximum will not be exceeded when 20 males are randomly selected.
What is the maximum weight in lbs rounded to the nearest pound?
Do these data satisfy the assumptions for inference? Explain.- Find the mean and standard deviation of the observed weights.
SOB's systolic blood pressure is a random variable with a mean of 145 mmHG and a standard deviation of 20mmHG. If the SOB's blood pressure is taken at a randomly chosen moment
from their 50 data points washington dc not in the study the researchers calculated a correlation of 0.988. based on
Standard deviation of 10 minutes. A random sample of 16 cars is selected. What is the probability that the sample mean is between 45 and 52 minutes.
Shoe Size and GPA The figure shows a scatterplot of shoe size and GPA for some college students.
This assignment is designed to test your knowledge about the first two major topics, Descriptive Statistics and Probability and Probability Distributions.
at the height of the great recession of 2002 an average of 120 people arrived each hour at the cambridge location for
(a) What is the distribution of the random variable X - Y? (b) Find the probability that a given calculation will run faster using Fortran
a researcher conducts an independent-measures study examining how the brain chemical serotonin is related to
How old must the car be for you to afford it? How old will this type of car be before it has a negative value?
We have the following data: sample mean ¯x= 42.6, sample deviation s= 2, number of samples n= 33 and the null hypothesis is µ0= 42.
study where a drug was given to 10 patients and a placebo to another group of 10 patients to determine if the drug has an effect on a patient's illness?
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