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In a chemical experiment, a solution is to be kept at 70 degrees Celsius. At a randomly selected time, the actual temperature is a normal random variable with mean 70 degrees Celsius and standard deviation 0.4 degrees Celsius.
A) The middle 95% of time the temperature is between __ and __ ?
B) What is the 10th percentile?
when a survey calls residential phone numbers at random only 20 of the calls reach a live person. you watch a random
A club has twenty members aged twenty. What are the chances that at least one fourth of them will die before their 65th birthdays?
use multiple regression to find the line of best fit through the following data. what does this tell
A sample size n=100 is taken from a population that has a proportion p= 1/5. If, in the sample, ^p=0.25, will the 95% confidence interval for p contain the true value of p^is at top p at bottom ^p
There is 0.75 probability that you will get promotion or raise. Probability of getting promotion and raise is 0.50. Determine the probability to receive a raise.
A state meat inspector in lowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled " 3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
q1 a doctor wants to know if there is a relationship between a fathers weight and his first newborn sons weight.
in a recent year the federal communications commission reported that the mean wait for repairs for verizon customers
The mean number of tasks completed successfully by all teams each day and the standard deviation is computed. The results are given below. The ANOVA F-test statistic value is?
Suppose that the actual mean value in the population is , what is the probability of a Type II error (incorrectly accepting a false null hypothesis)?
Suppose that 15% of the population is left-handed. If 20 people are selected at random, find the probability that exactly 4 of them are left-handed.
car manufacturers are concerned about meeting new government regulations on fuel efficiency. audi knows that their
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