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Nurses wondered if birth weights of babies are going up. They knew that the average birth weight of a baby last year was 7.6 pounds. A random sample of 15 weights of babies at the hospital where the nurses work gave an average birth weight of 7.9 pounds. Nurses felt that the birth weight this year are normally distributed. Which of the following is true about the distribution of sample means?
- Since the sample size is less than 30, the population data cannot be normally distributed. Therefore, the distribution of sample means will not be normall distributed.
- Even though the sample size is less than 30, distribution of sample means will be normal because the population data follow a normal distribution.
- The distribution of sample means will not be normal even though the population data followed a normal distribution because the sample size is less than 30
- The distribution of sample means will be norml regardless of the shape of the data in the population
in a physics class alex and mike were performing a hypothesis test concerning the mean amount of static electricity in
High precision titanium spheres are popular components in manufacturing of ball bearings. A factory has ordered a shipment of 5000 titanium spheres from aboard. It is found that the shipment has a mean radius of 1.5 cm with a standard deviation ..
The mean is a useful measure, but it can be misleading. Describe a circumstance when the mean is very useful as the average and a circumstance when the mean is very misleading as the average.
a consulting engineer receives on average 0.7 requests per week. if the number of requests follows a poisson process
bay area community college bacc has collected data comparing the starting salaries of their graduating students with
The State Game Commission set on length, if it is desired that 91% of the fish caught may be kept by fisherpersons? There is no limit on size for trout that exceed the minimum.
University officials at a major university would like to use three -term moving averages to examine enrollment. Enrollment data (in thousands of students) for the 12 most recent terms are shown in middle column of the table below.
What is the correct answer to Suppose you were trying to decide which of two machines to purchase. Furthermore, suppose the length to which the machines cut a particular product part was important.
To do this, he selects 16 bags of tortilla chips of this brand at random and determines the net weight of each. He finds a sample mean of 13.88 oz. with a standard deviation of s = 0.24 oz.
Write down the differential equations which describe the probabilistic behavior of the unit in time as a Markov process.
an oil drilling company ventures into various locations and its success or failure is independent from one location to
what is the total area under the normal curve?is ita 0.5b 1c it depends on the standard deviationd it depends on the
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